73640557199 has 16 divisors (see below), whose sum is σ = 81531372960. Its totient is φ = 65954549760.

The previous prime is 73640557187. The next prime is 73640557201. The reversal of 73640557199 is 99175504637.

It is not a de Polignac number, because 73640557199 - 2²⁸ = 73372121743 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 (73610557199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135407 + ... + 406959.

It is an arithmetic number, because the mean of its divisors is an integer number (5095710810).

Almost surely, 2^73640557199 is an apocalyptic number.

73640557199 is a deficient number, since it is larger than the sum of its proper divisors (7890815761).

73640557199 is a wasteful number, since it uses less digits than its factorization.

73640557199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271930.

The product of its (nonzero) digits is 7144200, while the sum is 56.

The spelling of 73640557199 in words is "seventy-three billion, six hundred forty million, five hundred fifty-seven thousand, one hundred ninety-nine".