21472567704 has 96 divisors (see below), whose sum is σ = 66484398240. Its totient is φ = 6133017600.

The previous prime is 21472567703. The next prime is 21472567709. The reversal of 21472567704 is 40776527412.

21472567704 is a `hidden beast` number, since 2 + 14 + 7 + 2 + 567 + 70 + 4 = 666.

It is a super-2 number, since 2×21472567704² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 21472567704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21472567703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2294074 + ... + 2303414.

It is an arithmetic number, because the mean of its divisors is an integer number (692545815).

Almost surely, 2^21472567704 is an apocalyptic number.

21472567704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21472567704 is an abundant number, since it is smaller than the sum of its proper divisors (45011830536).

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

21472567704 is a wasteful number, since it uses less digits than its factorization.

21472567704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13921 (or 13914 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The spelling of 21472567704 in words is "twenty-one billion, four hundred seventy-two million, five hundred sixty-seven thousand, seven hundred four".