72608634287 has 12 divisors (see below), whose sum is σ = 84653792136. Its totient is φ = 62095466160.

The previous prime is 72608634271. The next prime is 72608634331. The reversal of 72608634287 is 78243680627.

It is a happy number.

It is not a de Polignac number, because 72608634287 - 2⁴ = 72608634271 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72608634187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1650764 + ... + 1694177.

It is an arithmetic number, because the mean of its divisors is an integer number (7054482678).

Almost surely, 2^72608634287 is an apocalyptic number.

72608634287 is a deficient number, since it is larger than the sum of its proper divisors (12045157849).

72608634287 is a wasteful number, since it uses less digits than its factorization.

72608634287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345398 (or 3345391 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 72608634287 in words is "seventy-two billion, six hundred eight million, six hundred thirty-four thousand, two hundred eighty-seven".