21264012846574 has 64 divisors (see below), whose sum is σ = 33097569744960. Its totient is φ = 10239615360000.

The previous prime is 21264012846569. The next prime is 21264012846577. The reversal of 21264012846574 is 47564821046212.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21264012846577) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13215669082 + ... + 13215670690.

It is an arithmetic number, because the mean of its divisors is an integer number (517149527265).

Almost surely, 2^{21264012846574} is an apocalyptic number.

21264012846574 is a deficient number, since it is larger than the sum of its proper divisors (11833556898386).

21264012846574 is a wasteful number, since it uses less digits than its factorization.

21264012846574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4597.

The product of its (nonzero) digits is 5160960, while the sum is 52.

The spelling of 21264012846574 in words is "twenty-one trillion, two hundred sixty-four billion, twelve million, eight hundred forty-six thousand, five hundred seventy-four".