79650400565 has 8 divisors (see below), whose sum is σ = 95593527168. Its totient is φ = 63711622800.

The previous prime is 79650400561. The next prime is 79650400579. The reversal of 79650400565 is 56500405697.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79650400565 - 2² = 79650400561 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 (79650400561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046777 + ... + 1120286.

It is an arithmetic number, because the mean of its divisors is an integer number (11949190896).

Almost surely, 2^79650400565 is an apocalyptic number.

It is an amenable number.

79650400565 is a deficient number, since it is larger than the sum of its proper divisors (15943126603).

79650400565 is a wasteful number, since it uses less digits than its factorization.

79650400565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174419.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 79650400565 in words is "seventy-nine billion, six hundred fifty million, four hundred thousand, five hundred sixty-five".