73997744223 has 32 divisors (see below), whose sum is σ = 111873045760. Its totient is φ = 43129739520.

The previous prime is 73997744213. The next prime is 73997744231. The reversal of 73997744223 is 32244779937.

It is a happy number.

It is not a de Polignac number, because 73997744223 - 2⁶ = 73997744159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73997744213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3778968 + ... + 3798498.

It is an arithmetic number, because the mean of its divisors is an integer number (3496032680).

Almost surely, 2^73997744223 is an apocalyptic number.

73997744223 is a deficient number, since it is larger than the sum of its proper divisors (37875301537).

73997744223 is a wasteful number, since it uses less digits than its factorization.

73997744223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24679.

The product of its digits is 16003008, while the sum is 57.

The spelling of 73997744223 in words is "seventy-three billion, nine hundred ninety-seven million, seven hundred forty-four thousand, two hundred twenty-three".