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135682243081 = 72113110497741
BaseRepresentation
bin111111001011101001…
…0101011101000001001
3110222012221002002202021
41332113102223220021
54210334123234311
6142155341204441
712542222015500
oct1762722535011
9428187062667
10135682243081
11525a70a84a0
1222367860721
13ca44196348
1467d2001837
1537e1b31171
hex1f974aba09

135682243081 has 48 divisors (see below), whose sum is σ = 177929740800. Its totient is φ = 102205152000.

The previous prime is 135682243079. The next prime is 135682243111. The reversal of 135682243081 is 180342286531.

It is not a de Polignac number, because 135682243081 - 21 = 135682243079 is a prime.

It is a super-2 number, since 2×1356822430812 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135682243001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17523871 + ... + 17531611.

It is an arithmetic number, because the mean of its divisors is an integer number (3706869600).

Almost surely, 2135682243081 is an apocalyptic number.

135682243081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135682243081 is a deficient number, since it is larger than the sum of its proper divisors (42247497719).

135682243081 is a wasteful number, since it uses less digits than its factorization.

135682243081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8846 (or 8839 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 135682243081 in words is "one hundred thirty-five billion, six hundred eighty-two million, two hundred forty-three thousand, eighty-one".

Divisors: 1 7 11 31 49 77 217 341 539 1049 1519 2387 7343 7741 11539 16709 32519 51401 54187 80773 85151 227633 239971 357709 379309 565411 596057 1593431 1679797 2503963 2639681 4172399 8120309 11758579 17527741 18477767 56842163 89323399 129344369 251729579 397895141 625263793 1762107053 2769025369 4376846551 12334749371 19383177583 135682243081