21374336124426 has 16 divisors (see below), whose sum is σ = 43056216655200. Its totient is φ = 7073521307088.

The previous prime is 21374336124397. The next prime is 21374336124473. The reversal of 21374336124426 is 62442163347312.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12814349361 + ... + 12814351028.

It is an arithmetic number, because the mean of its divisors is an integer number (2691013540950).

Almost surely, 2^{21374336124426} is an apocalyptic number.

21374336124426 is an abundant number, since it is smaller than the sum of its proper divisors (21681880530774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21374336124426 is a wasteful number, since it uses less digits than its factorization.

21374336124426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25628700533.

The product of its digits is 3483648, while the sum is 48.

The spelling of 21374336124426 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred thirty-six million, one hundred twenty-four thousand, four hundred twenty-six".