21427671120 has 40 divisors (see below), whose sum is σ = 66425781216. Its totient is φ = 5714045568.

The previous prime is 21427671103. The next prime is 21427671121. The reversal of 21427671120 is 2117672412.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21427671121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44640742 + ... + 44641221.

Almost surely, 2^21427671120 is an apocalyptic number.

21427671120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21427671120 is an abundant number, since it is smaller than the sum of its proper divisors (44998110096).

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

21427671120 is a wasteful number, since it uses less digits than its factorization.

21427671120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89281979 (or 89281973 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The spelling of 21427671120 in words is "twenty-one billion, four hundred twenty-seven million, six hundred seventy-one thousand, one hundred twenty".