155412215530 has 32 divisors (see below), whose sum is σ = 328647932928. Its totient is φ = 52166337600.

The previous prime is 155412215489. The next prime is 155412215549. The reversal of 155412215530 is 35512214551.

155412215530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54338506 + ... + 54341365.

It is an arithmetic number, because the mean of its divisors is an integer number (10270247904).

Almost surely, 2^155412215530 is an apocalyptic number.

155412215530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155412215530 is an abundant number, since it is smaller than the sum of its proper divisors (173235717398).

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

155412215530 is a wasteful number, since it uses less digits than its factorization.

155412215530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108679902.

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 155412215530 in words is "one hundred fifty-five billion, four hundred twelve million, two hundred fifteen thousand, five hundred thirty".