79365865073 has 4 divisors (see below), whose sum is σ = 86580943728. Its totient is φ = 72150786420.

The previous prime is 79365865057. The next prime is 79365865079. The reversal of 79365865073 is 37056856397.

It is a happy number.

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 79365865073 - 2⁴ = 79365865057 is a prime.

It is a super-3 number, since 3×79365865073³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79365865079) 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, 3607539311 + ... + 3607539332.

It is an arithmetic number, because the mean of its divisors is an integer number (21645235932).

Almost surely, 2^79365865073 is an apocalyptic number.

It is an amenable number.

79365865073 is a deficient number, since it is larger than the sum of its proper divisors (7215078655).

79365865073 is a wasteful number, since it uses less digits than its factorization.

79365865073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7215078654.

The product of its (nonzero) digits is 28576800, while the sum is 59.

The spelling of 79365865073 in words is "seventy-nine billion, three hundred sixty-five million, eight hundred sixty-five thousand, seventy-three".