155595072880 has 160 divisors (see below), whose sum is σ = 400544238528. Its totient is φ = 55837900800.

The previous prime is 155595072863. The next prime is 155595072901. The reversal of 155595072880 is 88270595551.

It is a super-2 number, since 2×155595072880² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52369795 + ... + 52372765.

Almost surely, 2^155595072880 is an apocalyptic number.

155595072880 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 155595072880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200272119264).

155595072880 is an abundant number, since it is smaller than the sum of its proper divisors (244949165648).

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

155595072880 is a wasteful number, since it uses less digits than its factorization.

155595072880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395 (or 4389 counting only the distinct ones).

The product of its (nonzero) digits is 5040000, while the sum is 55.

The spelling of 155595072880 in words is "one hundred fifty-five billion, five hundred ninety-five million, seventy-two thousand, eight hundred eighty".