155513300520 has 64 divisors (see below), whose sum is σ = 467715208320. Its totient is φ = 41365741824.

The previous prime is 155513300477. The next prime is 155513300521. The reversal of 155513300520 is 25003315551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (155513300521) 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, 1584532 + ... + 1679811.

It is an arithmetic number, because the mean of its divisors is an integer number (7308050130).

Almost surely, 2^155513300520 is an apocalyptic number.

155513300520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155513300520 is an abundant number, since it is smaller than the sum of its proper divisors (312201907800).

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

155513300520 is a wasteful number, since it uses less digits than its factorization.

155513300520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264754 (or 3264750 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

The spelling of 155513300520 in words is "one hundred fifty-five billion, five hundred thirteen million, three hundred thousand, five hundred twenty".