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1613360253431 = 19791720962459
BaseRepresentation
bin10111011110100011110…
…000111100100111110111
312201020100211221200020102
4113132203300330213313
5202413130211102211
63233100101224315
7224363366612153
oct27364360744767
95636324850212
101613360253431
11572249891653
1222081b10209b
13b91a6b30c44
1458130c32063
152be79497a3b
hex177a3c3c9f7

1613360253431 has 16 divisors (see below), whose sum is σ = 1719898560000. Its totient is φ = 1508987278656.

The previous prime is 1613360253409. The next prime is 1613360253523. The reversal of 1613360253431 is 1343520633161.

It is a cyclic number.

It is not a de Polignac number, because 1613360253431 - 234 = 1596180384247 is a prime.

It is a super-2 number, since 2×16133602534312 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613360258431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25799480 + ... + 25861938.

It is an arithmetic number, because the mean of its divisors is an integer number (107493660000).

Almost surely, 21613360253431 is an apocalyptic number.

1613360253431 is a deficient number, since it is larger than the sum of its proper divisors (106538306569).

1613360253431 is a wasteful number, since it uses less digits than its factorization.

1613360253431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79766.

The product of its (nonzero) digits is 116640, while the sum is 38.

Adding to 1613360253431 its reverse (1343520633161), we get a palindrome (2956880886592).

The spelling of 1613360253431 in words is "one trillion, six hundred thirteen billion, three hundred sixty million, two hundred fifty-three thousand, four hundred thirty-one".

Divisors: 1 19 79 1501 17209 62459 326971 1186721 1359511 4934261 25830709 93750959 1074856931 20422281689 84913697549 1613360253431