72517514213 has 4 divisors (see below), whose sum is σ = 72532406688. Its totient is φ = 72502621740.

The previous prime is 72517514207. The next prime is 72517514221. The reversal of 72517514213 is 31241571527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72517514213 - 2⁴ = 72517514197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72517514233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7438931 + ... + 7448672.

It is an arithmetic number, because the mean of its divisors is an integer number (18133101672).

Almost surely, 2^72517514213 is an apocalyptic number.

It is an amenable number.

72517514213 is a deficient number, since it is larger than the sum of its proper divisors (14892475).

72517514213 is a wasteful number, since it uses less digits than its factorization.

72517514213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14892474.

The product of its digits is 58800, while the sum is 38.

The spelling of 72517514213 in words is "seventy-two billion, five hundred seventeen million, five hundred fourteen thousand, two hundred thirteen".