215271872676 has 81 divisors (see below), whose sum is σ = 633059122059. Its totient is φ = 61500681648.

The previous prime is 215271872671. The next prime is 215271872741. The reversal of 215271872676 is 676278172512.

The square root of 215271872676 is 463974.

It is a perfect power (a square), and thus also a powerful number.

215271872676 is a `hidden beast` number, since 21 + 527 + 1 + 8 + 7 + 26 + 76 = 666.

It is not an unprimeable number, because it can be changed into a prime (215271872671) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 19481385 + ... + 19492431.

Almost surely, 2^215271872676 is an apocalyptic number.

215271872676 is the 463974-th square number.

It is an amenable number.

215271872676 is an abundant number, since it is smaller than the sum of its proper divisors (417787249383).

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

215271872676 is an equidigital number, since it uses as much as digits as its factorization.

215271872676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22118 (or 11059 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 54.

The spelling of 215271872676 in words is "two hundred fifteen billion, two hundred seventy-one million, eight hundred seventy-two thousand, six hundred seventy-six".