75318099665 has 16 divisors (see below), whose sum is σ = 90553038912. Its totient is φ = 60140368704.

The previous prime is 75318099643. The next prime is 75318099721. The reversal of 75318099665 is 56699081357.

It is a cyclic number.

It is not a de Polignac number, because 75318099665 - 2³⁰ = 74244357841 is a prime.

It is a super-2 number, since 2×75318099665² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7499027 + ... + 7509063.

It is an arithmetic number, because the mean of its divisors is an integer number (5659564932).

Almost surely, 2^75318099665 is an apocalyptic number.

It is an amenable number.

75318099665 is a deficient number, since it is larger than the sum of its proper divisors (15234939247).

75318099665 is a wasteful number, since it uses less digits than its factorization.

75318099665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12736.

The product of its (nonzero) digits is 12247200, while the sum is 59.

The spelling of 75318099665 in words is "seventy-five billion, three hundred eighteen million, ninety-nine thousand, six hundred sixty-five".