215237655028 has 48 divisors (see below), whose sum is σ = 423527142528. Its totient is φ = 94875984000.

The previous prime is 215237655019. The next prime is 215237655049. The reversal of 215237655028 is 820556732512.

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, 374175 + ... + 755302.

It is an arithmetic number, because the mean of its divisors is an integer number (8823482136).

Almost surely, 2^215237655028 is an apocalyptic number.

It is an amenable number.

215237655028 is a deficient number, since it is larger than the sum of its proper divisors (208289487500).

215237655028 is a wasteful number, since it uses less digits than its factorization.

215237655028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129624 (or 1129622 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 215237655028 in words is "two hundred fifteen billion, two hundred thirty-seven million, six hundred fifty-five thousand, twenty-eight".