21237587060 has 48 divisors (see below), whose sum is σ = 47227501440. Its totient is φ = 7999712640.

The previous prime is 21237587053. The next prime is 21237587071. The reversal of 21237587060 is 6078573212.

It is a junction number, because it is equal to n+sod(n) for n = 21237586999 and 21237587017.

It is a congruent number.

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, 103871 + ... + 230790.

It is an arithmetic number, because the mean of its divisors is an integer number (983906280).

Almost surely, 2^21237587060 is an apocalyptic number.

21237587060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21237587060 is an abundant number, since it is smaller than the sum of its proper divisors (25989914380).

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

21237587060 is a wasteful number, since it uses less digits than its factorization.

21237587060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334856 (or 334854 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 21237587060 in words is "twenty-one billion, two hundred thirty-seven million, five hundred eighty-seven thousand, sixty".