73994564193 has 64 divisors (see below), whose sum is σ = 114175180800. Its totient is φ = 42155588160.

The previous prime is 73994564177. The next prime is 73994564233. The reversal of 73994564193 is 39146549937.

It is a happy number.

It is not a de Polignac number, because 73994564193 - 2⁴ = 73994564177 is a prime.

It is a super-2 number, since 2×73994564193² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73994562193) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51998280 + ... + 51999702.

It is an arithmetic number, because the mean of its divisors is an integer number (1783987200).

Almost surely, 2^73994564193 is an apocalyptic number.

It is an amenable number.

73994564193 is a deficient number, since it is larger than the sum of its proper divisors (40180616607).

73994564193 is a wasteful number, since it uses less digits than its factorization.

73994564193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042.

The product of its digits is 22044960, while the sum is 60.

The spelling of 73994564193 in words is "seventy-three billion, nine hundred ninety-four million, five hundred sixty-four thousand, one hundred ninety-three".