21437443060 has 24 divisors (see below), whose sum is σ = 49111233696. Its totient is φ = 7795433760.

The previous prime is 21437443039. The next prime is 21437443091. The reversal of 21437443060 is 6034473412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48721242 + ... + 48721681.

It is an arithmetic number, because the mean of its divisors is an integer number (2046301404).

Almost surely, 2^21437443060 is an apocalyptic number.

21437443060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21437443060 is an abundant number, since it is smaller than the sum of its proper divisors (27673790636).

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

21437443060 is a wasteful number, since it uses less digits than its factorization.

21437443060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97442943 (or 97442941 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The spelling of 21437443060 in words is "twenty-one billion, four hundred thirty-seven million, four hundred forty-three thousand, sixty".