2155032000520 has 32 divisors (see below), whose sum is σ = 5541510859200. Its totient is φ = 738868114368.

The previous prime is 2155032000509. The next prime is 2155032000521. The reversal of 2155032000520 is 250002305512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2155032000521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3848271150 + ... + 3848271709.

It is an arithmetic number, because the mean of its divisors is an integer number (173172214350).

Almost surely, 2^{2155032000520} is an apocalyptic number.

2155032000520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155032000520 is an abundant number, since it is smaller than the sum of its proper divisors (3386478858680).

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

2155032000520 is a wasteful number, since it uses less digits than its factorization.

2155032000520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7696542877 (or 7696542873 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 2155032000520 in words is "two trillion, one hundred fifty-five billion, thirty-two million, five hundred twenty", and thus it is an aban number.