21362636605412 has 24 divisors (see below), whose sum is σ = 38597652710400. Its totient is φ = 10334862319680.

The previous prime is 21362636605369. The next prime is 21362636605421. The reversal of 21362636605412 is 21450663626312.

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, 15132668 + ... + 16484019.

It is an arithmetic number, because the mean of its divisors is an integer number (1608235529600).

Almost surely, 2^{21362636605412} is an apocalyptic number.

It is an amenable number.

21362636605412 is a deficient number, since it is larger than the sum of its proper divisors (17235016104988).

21362636605412 is a wasteful number, since it uses less digits than its factorization.

21362636605412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31622171 (or 31622169 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 21362636605412 in words is "twenty-one trillion, three hundred sixty-two billion, six hundred thirty-six million, six hundred five thousand, four hundred twelve".