215716631357272 has 8 divisors (see below), whose sum is σ = 404468683794900. Its totient is φ = 107858315678632.

The previous prime is 215716631357261. The next prime is 215716631357287. The reversal of 215716631357272 is 272753136617512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13482289459822 + ... + 13482289459837.

Almost surely, 2^{215716631357272} is an apocalyptic number.

It is an amenable number.

215716631357272 is a deficient number, since it is larger than the sum of its proper divisors (188752052437628).

215716631357272 is a wasteful number, since it uses less digits than its factorization.

215716631357272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26964578919665 (or 26964578919661 counting only the distinct ones).

The product of its digits is 22226400, while the sum is 58.

The spelling of 215716631357272 in words is "two hundred fifteen trillion, seven hundred sixteen billion, six hundred thirty-one million, three hundred fifty-seven thousand, two hundred seventy-two".