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13573704081 = 372237989571
BaseRepresentation
bin11001010010000111…
…00100100110010001
31022000222022121111210
430221003210212101
5210244332012311
610122523330333
7660240403200
oct145103444621
938028277453
1013573704081
115836002863
1227699809a9
1313841c1582
1492aa29237
155469c83a6
hex3290e4991

13573704081 has 96 divisors (see below), whose sum is σ = 22535884800. Its totient is φ = 7230263040.

The previous prime is 13573704017. The next prime is 13573704083. The reversal of 13573704081 is 18040737531.

It is not a de Polignac number, because 13573704081 - 26 = 13573704017 is a prime.

It is a super-2 number, since 2×135737040812 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13573704083) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23771526 + ... + 23772096.

It is an arithmetic number, because the mean of its divisors is an integer number (234748800).

Almost surely, 213573704081 is an apocalyptic number.

It is an amenable number.

13573704081 is a deficient number, since it is larger than the sum of its proper divisors (8962180719).

13573704081 is a wasteful number, since it uses less digits than its factorization.

13573704081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 13573704081 in words is "thirteen billion, five hundred seventy-three million, seven hundred four thousand, eighty-one".

Divisors: 1 3 7 21 23 49 69 79 89 147 161 237 267 483 553 571 623 1127 1659 1713 1817 1869 2047 3381 3871 3997 4361 5451 6141 7031 11613 11991 12719 13083 13133 14329 21093 27979 38157 39399 42987 45109 49217 50819 83937 89033 91931 100303 135327 147651 152457 161713 267099 275793 300909 315763 344519 355733 485139 643517 947289 1033557 1037507 1067199 1131991 1168837 1930551 2210341 2490131 3112521 3395973 3506511 4014701 6631023 7262549 7470393 7923937 8181859 12044103 21787647 23771811 24545577 28102907 50837843 57273013 84308721 92338123 152513529 171819039 196720349 277014369 590161047 646366861 1939100583 4524568027 13573704081