21364767405174 has 16 divisors (see below), whose sum is σ = 42730995052080. Its totient is φ = 7121345761440.

The previous prime is 21364767405139. The next prime is 21364767405211. The reversal of 21364767405174 is 47150476746312.

It is a congruent 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, 60653157 + ... + 61004384.

It is an arithmetic number, because the mean of its divisors is an integer number (2670687190755).

Almost surely, 2^{21364767405174} is an apocalyptic number.

21364767405174 is an abundant number, since it is smaller than the sum of its proper divisors (21366227646906).

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

21364767405174 is a wasteful number, since it uses less digits than its factorization.

21364767405174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121686815.

The product of its (nonzero) digits is 23708160, while the sum is 57.

The spelling of 21364767405174 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred sixty-seven million, four hundred five thousand, one hundred seventy-four".