21373462075746 has 128 divisors (see below), whose sum is σ = 47373896908800. Its totient is φ = 6374949456960.

The previous prime is 21373462075687. The next prime is 21373462075759. The reversal of 21373462075746 is 64757026437312.

It is a super-2 number, since 2×21373462075746² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 497695551 + ... + 497738493.

It is an arithmetic number, because the mean of its divisors is an integer number (370108569600).

Almost surely, 2^{21373462075746} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21373462075746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23686948454400).

21373462075746 is an abundant number, since it is smaller than the sum of its proper divisors (26000434833054).

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

21373462075746 is a wasteful number, since it uses less digits than its factorization.

21373462075746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43564.

The product of its (nonzero) digits is 35562240, while the sum is 57.

The spelling of 21373462075746 in words is "twenty-one trillion, three hundred seventy-three billion, four hundred sixty-two million, seventy-five thousand, seven hundred forty-six".