155836323656 has 96 divisors (see below), whose sum is σ = 335633038560. Its totient is φ = 67567758336.

The previous prime is 155836323619. The next prime is 155836323679. The reversal of 155836323656 is 656323638551.

It is a junction number, because it is equal to n+sod(n) for n = 155836323598 and 155836323607.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12933971 + ... + 12946013.

It is an arithmetic number, because the mean of its divisors is an integer number (3496177485).

Almost surely, 2^155836323656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155836323656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167816519280).

155836323656 is an abundant number, since it is smaller than the sum of its proper divisors (179796714904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155836323656 is a wasteful number, since it uses less digits than its factorization.

155836323656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12655 (or 12638 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 53.

The spelling of 155836323656 in words is "one hundred fifty-five billion, eight hundred thirty-six million, three hundred twenty-three thousand, six hundred fifty-six".