215154869272 has 64 divisors (see below), whose sum is σ = 495637632000. Its totient is φ = 85497451776.

The previous prime is 215154869231. The next prime is 215154869327. The reversal of 215154869272 is 272968451512.

It is a happy number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

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, 2101197 + ... + 2201212.

It is an arithmetic number, because the mean of its divisors is an integer number (7744338000).

Almost surely, 2^215154869272 is an apocalyptic number.

It is an amenable number.

215154869272 is an abundant number, since it is smaller than the sum of its proper divisors (280482762728).

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

215154869272 is a wasteful number, since it uses less digits than its factorization.

215154869272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302488 (or 4302484 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 52.

The spelling of 215154869272 in words is "two hundred fifteen billion, one hundred fifty-four million, eight hundred sixty-nine thousand, two hundred seventy-two".