73688134865 has 32 divisors (see below), whose sum is σ = 92186476800. Its totient is φ = 56503028736.

The previous prime is 73688134859. The next prime is 73688134889. The reversal of 73688134865 is 56843188637.

It is a cyclic number.

It is not a de Polignac number, because 73688134865 - 2³⁰ = 72614393041 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3111509 + ... + 3135101.

It is an arithmetic number, because the mean of its divisors is an integer number (2880827400).

Almost surely, 2^73688134865 is an apocalyptic number.

It is an amenable number.

73688134865 is a deficient number, since it is larger than the sum of its proper divisors (18498341935).

73688134865 is a wasteful number, since it uses less digits than its factorization.

73688134865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23913.

The product of its digits is 23224320, while the sum is 59.

The spelling of 73688134865 in words is "seventy-three billion, six hundred eighty-eight million, one hundred thirty-four thousand, eight hundred sixty-five".