21116023462636 has 24 divisors (see below), whose sum is σ = 37960768464080. Its totient is φ = 10270224902592.

The previous prime is 21116023462561. The next prime is 21116023462753. The reversal of 21116023462636 is 63626432061112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21116023462592 and 21116023462601.

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, 16284315 + ... + 17533138.

Almost surely, 2^{21116023462636} is an apocalyptic number.

It is an amenable number.

21116023462636 is a deficient number, since it is larger than the sum of its proper divisors (16844745001444).

21116023462636 is a wasteful number, since it uses less digits than its factorization.

21116023462636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33821713 (or 33821711 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 21116023462636 in words is "twenty-one trillion, one hundred sixteen billion, twenty-three million, four hundred sixty-two thousand, six hundred thirty-six".