215253155432 has 32 divisors (see below), whose sum is σ = 461393997120. Its totient is φ = 92223905280.

The previous prime is 215253155387. The next prime is 215253155441. The reversal of 215253155432 is 234551352512.

215253155432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×215253155432² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 381353 + ... + 758904.

It is an arithmetic number, because the mean of its divisors is an integer number (14418562410).

Almost surely, 2^215253155432 is an apocalyptic number.

It is an amenable number.

215253155432 is an abundant number, since it is smaller than the sum of its proper divisors (246140841688).

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

215253155432 is a wasteful number, since it uses less digits than its factorization.

215253155432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143641 (or 1143637 counting only the distinct ones).

The product of its digits is 180000, while the sum is 38.

The spelling of 215253155432 in words is "two hundred fifteen billion, two hundred fifty-three million, one hundred fifty-five thousand, four hundred thirty-two".