155844402560 has 512 divisors, whose sum is σ = 481521991680. Its totient is φ = 46820229120.

The previous prime is 155844402559. The next prime is 155844402577. The reversal of 155844402560 is 65204448551.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 231566384 + ... + 231567056.

It is an arithmetic number, because the mean of its divisors is an integer number (940472640).

Almost surely, 2^155844402560 is an apocalyptic number.

155844402560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155844402560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240760995840).

155844402560 is an abundant number, since it is smaller than the sum of its proper divisors (325677589120).

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

155844402560 is a wasteful number, since it uses less digits than its factorization.

155844402560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 44.

It can be divided in two parts, 15584 and 4402560, that added together give a palindrome (4418144).

The spelling of 155844402560 in words is "one hundred fifty-five billion, eight hundred forty-four million, four hundred two thousand, five hundred sixty".