215054551134520 has 64 divisors (see below), whose sum is σ = 487605495168000. Its totient is φ = 85358324787840.

The previous prime is 215054551134317. The next prime is 215054551134547. The reversal of 215054551134520 is 25431155450512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64003381 + ... + 67279579.

It is an arithmetic number, because the mean of its divisors is an integer number (7618835862000).

Almost surely, 2^{215054551134520} is an apocalyptic number.

215054551134520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215054551134520 is an abundant number, since it is smaller than the sum of its proper divisors (272550944033480).

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

215054551134520 is a wasteful number, since it uses less digits than its factorization.

215054551134520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288868 (or 3288864 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 43.

The spelling of 215054551134520 in words is "two hundred fifteen trillion, fifty-four billion, five hundred fifty-one million, one hundred thirty-four thousand, five hundred twenty".