21754571460 has 48 divisors (see below), whose sum is σ = 60959133312. Its totient is φ = 5796806400.

The previous prime is 21754571431. The next prime is 21754571477. The reversal of 21754571460 is 6417545712.

It is a super-2 number, since 2×21754571460² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57976 + ... + 216495.

It is an arithmetic number, because the mean of its divisors is an integer number (1269981944).

Almost surely, 2^21754571460 is an apocalyptic number.

21754571460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21754571460 is an abundant number, since it is smaller than the sum of its proper divisors (39204561852).

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

21754571460 is a wasteful number, since it uses less digits than its factorization.

21754571460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275804 (or 275802 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 21754571460 in words is "twenty-one billion, seven hundred fifty-four million, five hundred seventy-one thousand, four hundred sixty".