72616977231 has 8 divisors (see below), whose sum is σ = 96830151600. Its totient is φ = 48407560512.

The previous prime is 72616977193. The next prime is 72616977239. The reversal of 72616977231 is 13277961627.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72616977231 - 2¹⁹ = 72616452943 is a prime.

It is a super-2 number, since 2×72616977231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72616977239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 894006 + ... + 971843.

It is an arithmetic number, because the mean of its divisors is an integer number (12103768950).

Almost surely, 2^72616977231 is an apocalyptic number.

72616977231 is a deficient number, since it is larger than the sum of its proper divisors (24213174369).

72616977231 is a wasteful number, since it uses less digits than its factorization.

72616977231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878825.

The product of its digits is 1333584, while the sum is 51.

The spelling of 72616977231 in words is "seventy-two billion, six hundred sixteen million, nine hundred seventy-seven thousand, two hundred thirty-one".