21413404044720 has 120 divisors (see below), whose sum is σ = 72054633409200. Its totient is φ = 5699022432768.

The previous prime is 21413404044707. The next prime is 21413404044737. The reversal of 21413404044720 is 2744040431412.

21413404044720 is a `hidden beast` number, since 2 + 14 + 134 + 0 + 40 + 4 + 472 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28848490 + ... + 29581449.

It is an arithmetic number, because the mean of its divisors is an integer number (600455278410).

Almost surely, 2^{21413404044720} is an apocalyptic number.

21413404044720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21413404044720 is an abundant number, since it is smaller than the sum of its proper divisors (50641229364480).

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

21413404044720 is a wasteful number, since it uses less digits than its factorization.

21413404044720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58430467 (or 58430458 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 36.

The spelling of 21413404044720 in words is "twenty-one trillion, four hundred thirteen billion, four hundred four million, forty-four thousand, seven hundred twenty".