72956379564517 has 4 divisors (see below), whose sum is σ = 73057848799680. Its totient is φ = 72854910329356.

The previous prime is 72956379564499. The next prime is 72956379564533. The reversal of 72956379564517 is 71546597365927.

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 72956379564517 - 2¹⁹ = 72956379040229 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 (72956379561517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50734616503 + ... + 50734617940.

It is an arithmetic number, because the mean of its divisors is an integer number (18264462199920).

Almost surely, 2^{72956379564517} is an apocalyptic number.

It is an amenable number.

72956379564517 is a deficient number, since it is larger than the sum of its proper divisors (101469235163).

72956379564517 is a wasteful number, since it uses less digits than its factorization.

72956379564517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101469235162.

The product of its digits is 3000564000, while the sum is 76.

The spelling of 72956379564517 in words is "seventy-two trillion, nine hundred fifty-six billion, three hundred seventy-nine million, five hundred sixty-four thousand, five hundred seventeen".