21364227624744 has 24 divisors (see below), whose sum is σ = 57861449817210. Its totient is φ = 7121409208224.

The previous prime is 21364227624713. The next prime is 21364227624749. The reversal of 21364227624744 is 44742672246312.

21364227624744 is a `hidden beast` number, since 2 + 1 + 3 + 6 + 4 + 2 + 2 + 7 + 624 + 7 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16154467024644 + 5209760600100 = 4019262^2 + 2282490^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (21364227624749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148362691767 + ... + 148362691910.

Almost surely, 2^{21364227624744} is an apocalyptic number.

21364227624744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21364227624744 is an abundant number, since it is smaller than the sum of its proper divisors (36497222192466).

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

21364227624744 is a wasteful number, since it uses less digits than its factorization.

21364227624744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296725383689 (or 296725383682 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 54.

The spelling of 21364227624744 in words is "twenty-one trillion, three hundred sixty-four billion, two hundred twenty-seven million, six hundred twenty-four thousand, seven hundred forty-four".