21630611592492 has 72 divisors (see below), whose sum is σ = 58720429748736. Its totient is φ = 6179251613472.

The previous prime is 21630611592467. The next prime is 21630611592563. The reversal of 21630611592492 is 29429511603612.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1197313 + ... + 6685415.

It is an arithmetic number, because the mean of its divisors is an integer number (815561524288).

Almost surely, 2^{21630611592492} is an apocalyptic number.

It is an amenable number.

21630611592492 is an abundant number, since it is smaller than the sum of its proper divisors (37089818156244).

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

21630611592492 is a wasteful number, since it uses less digits than its factorization.

21630611592492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5494827 (or 5494818 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 21630611592492 in words is "twenty-one trillion, six hundred thirty billion, six hundred eleven million, five hundred ninety-two thousand, four hundred ninety-two".