155707859632 has 80 divisors (see below), whose sum is σ = 331240674240. Its totient is φ = 70462319616.

The previous prime is 155707859621. The next prime is 155707859639. The reversal of 155707859632 is 236958707551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155707859639) 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, 20710338 + ... + 20717854.

It is an arithmetic number, because the mean of its divisors is an integer number (4140508428).

Almost surely, 2^155707859632 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 155707859632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165620337120).

155707859632 is an abundant number, since it is smaller than the sum of its proper divisors (175532814608).

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

155707859632 is a wasteful number, since it uses less digits than its factorization.

155707859632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9470 (or 9464 counting only the distinct ones).

The product of its (nonzero) digits is 15876000, while the sum is 58.

The spelling of 155707859632 in words is "one hundred fifty-five billion, seven hundred seven million, eight hundred fifty-nine thousand, six hundred thirty-two".