72666255315076 has 6 divisors (see below), whose sum is σ = 127165946801390. Its totient is φ = 36333127657536.

The previous prime is 72666255315047. The next prime is 72666255315097. The reversal of 72666255315076 is 67051355266627.

It can be written as a sum of positive squares in only one way, i.e., 58373878478400 + 14292376836676 = 7640280^2 + 3780526^2 .

It is a super-2 number, since 2×72666255315076² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9083281914381 + ... + 9083281914388.

Almost surely, 2^{72666255315076} is an apocalyptic number.

It is an amenable number.

72666255315076 is a deficient number, since it is larger than the sum of its proper divisors (54499691486314).

72666255315076 is a wasteful number, since it uses less digits than its factorization.

72666255315076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18166563828773 (or 18166563828771 counting only the distinct ones).

The product of its (nonzero) digits is 95256000, while the sum is 61.

The spelling of 72666255315076 in words is "seventy-two trillion, six hundred sixty-six billion, two hundred fifty-five million, three hundred fifteen thousand, seventy-six".