27215851272 has 32 divisors (see below), whose sum is σ = 68063664480. Its totient is φ = 9068745600.

The previous prime is 27215851211. The next prime is 27215851283.

It is a happy number.

27215851272 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130453 + ... + 267300.

It is an arithmetic number, because the mean of its divisors is an integer number (2126989515).

Almost surely, 2^27215851272 is an apocalyptic number.

It is an amenable number.

27215851272 is an abundant number, since it is smaller than the sum of its proper divisors (40847813208).

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

27215851272 is a wasteful number, since it uses less digits than its factorization.

27215851272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400613 (or 400609 counting only the distinct ones).

The product of its digits is 156800, while the sum is 42.

The spelling of 27215851272 in words is "twenty-seven billion, two hundred fifteen million, eight hundred fifty-one thousand, two hundred seventy-two".