17973877823 has 16 divisors (see below), whose sum is σ = 19973174400. Its totient is φ = 16036382880.

The previous prime is 17973877799. The next prime is 17973877877. The reversal of 17973877823 is 32877837971.

It is a cyclic number.

It is not a de Polignac number, because 17973877823 - 2²⁸ = 17705442367 is a prime.

It is a super-2 number, since 2×17973877823² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17973877423) 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, 375248 + ... + 420426.

It is an arithmetic number, because the mean of its divisors is an integer number (1248323400).

Almost surely, 2^17973877823 is an apocalyptic number.

17973877823 is a deficient number, since it is larger than the sum of its proper divisors (1999296577).

17973877823 is a wasteful number, since it uses less digits than its factorization.

17973877823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45862.

The product of its digits is 24893568, while the sum is 62.

The spelling of 17973877823 in words is "seventeen billion, nine hundred seventy-three million, eight hundred seventy-seven thousand, eight hundred twenty-three".