155859655679 has 16 divisors (see below), whose sum is σ = 191842570752. Its totient is φ = 123307692768.

The previous prime is 155859655673. The next prime is 155859655681. The reversal of 155859655679 is 976556958551.

It is a de Polignac number, because none of the positive numbers 2^k-155859655679 is a prime.

It is a super-3 number, since 3×155859655679³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155859655673) 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, 1209302 + ... + 1331964.

It is an arithmetic number, because the mean of its divisors is an integer number (11990160672).

Almost surely, 2^155859655679 is an apocalyptic number.

155859655679 is a deficient number, since it is larger than the sum of its proper divisors (35982915073).

155859655679 is a wasteful number, since it uses less digits than its factorization.

155859655679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136646.

The product of its digits is 510300000, while the sum is 71.

The spelling of 155859655679 in words is "one hundred fifty-five billion, eight hundred fifty-nine million, six hundred fifty-five thousand, six hundred seventy-nine".