72715065113 has 4 divisors (see below), whose sum is σ = 72716730240. Its totient is φ = 72713399988.

The previous prime is 72715065109. The next prime is 72715065121. The reversal of 72715065113 is 31156051727.

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 72715065113 - 2² = 72715065109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72715065193) 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, 765245 + ... + 855002.

It is an arithmetic number, because the mean of its divisors is an integer number (18179182560).

Almost surely, 2^72715065113 is an apocalyptic number.

It is an amenable number.

72715065113 is a deficient number, since it is larger than the sum of its proper divisors (1665127).

72715065113 is a wasteful number, since it uses less digits than its factorization.

72715065113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665126.

The product of its (nonzero) digits is 44100, while the sum is 38.

The spelling of 72715065113 in words is "seventy-two billion, seven hundred fifteen million, sixty-five thousand, one hundred thirteen".