72661271207 has 16 divisors (see below), whose sum is σ = 85861907712. Its totient is φ = 60194143680.

The previous prime is 72661271197. The next prime is 72661271213. The reversal of 72661271207 is 70217216627.

It is a cyclic number.

It is not a de Polignac number, because 72661271207 - 2²⁶ = 72594162343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72661271237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152353 + ... + 1213770.

It is an arithmetic number, because the mean of its divisors is an integer number (5366369232).

Almost surely, 2^72661271207 is an apocalyptic number.

72661271207 is a deficient number, since it is larger than the sum of its proper divisors (13200636505).

72661271207 is a wasteful number, since it uses less digits than its factorization.

72661271207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366278.

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 72661271207 in words is "seventy-two billion, six hundred sixty-one million, two hundred seventy-one thousand, two hundred seven".