72637005229 has 16 divisors (see below), whose sum is σ = 73702480384. Its totient is φ = 71579214000.

The previous prime is 72637005191. The next prime is 72637005247. The reversal of 72637005229 is 92250073627.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72637005229 is a prime.

It is a super-2 number, since 2×72637005229² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72637005829) 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, 30634414 + ... + 30636784.

It is an arithmetic number, because the mean of its divisors is an integer number (4606405024).

Almost surely, 2^72637005229 is an apocalyptic number.

It is an amenable number.

72637005229 is a deficient number, since it is larger than the sum of its proper divisors (1065475155).

72637005229 is a wasteful number, since it uses less digits than its factorization.

72637005229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808.

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 72637005229 in words is "seventy-two billion, six hundred thirty-seven million, five thousand, two hundred twenty-nine".