18469268584021 has 4 divisors (see below), whose sum is σ = 18898786458112. Its totient is φ = 18039750709932.

The previous prime is 18469268583977. The next prime is 18469268584049. The reversal of 18469268584021 is 12048586296481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18469268584021 - 2²³ = 18469260195413 is a prime.

It is a super-2 number, since 2×18469268584021² (a number of 27 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 (18469268584051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214758936981 + ... + 214758937066.

It is an arithmetic number, because the mean of its divisors is an integer number (4724696614528).

Almost surely, 2^{18469268584021} is an apocalyptic number.

It is an amenable number.

18469268584021 is a deficient number, since it is larger than the sum of its proper divisors (429517874091).

18469268584021 is an equidigital number, since it uses as much as digits as its factorization.

18469268584021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429517874090.

The product of its (nonzero) digits is 53084160, while the sum is 64.

The spelling of 18469268584021 in words is "eighteen trillion, four hundred sixty-nine billion, two hundred sixty-eight million, five hundred eighty-four thousand, twenty-one".