21454461120 has 112 divisors (see below), whose sum is σ = 68147123040. Its totient is φ = 5718736896.

The previous prime is 21454460981. The next prime is 21454461163. The reversal of 21454461120 is 2116445412.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 3849696 + ... + 3855264.

Almost surely, 2^21454461120 is an apocalyptic number.

21454461120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21454461120 is an abundant number, since it is smaller than the sum of its proper divisors (46692661920).

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

21454461120 is a wasteful number, since it uses less digits than its factorization.

21454461120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9602 (or 9592 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The spelling of 21454461120 in words is "twenty-one billion, four hundred fifty-four million, four hundred sixty-one thousand, one hundred twenty".