21860952436 has 12 divisors (see below), whose sum is σ = 40270175680. Its totient is φ = 10355187960.

The previous prime is 21860952413. The next prime is 21860952457. The reversal of 21860952436 is 63425906812.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143821980 + ... + 143822131.

Almost surely, 2^21860952436 is an apocalyptic number.

It is an amenable number.

21860952436 is a deficient number, since it is larger than the sum of its proper divisors (18409223244).

21860952436 is a wasteful number, since it uses less digits than its factorization.

21860952436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287644134 (or 287644132 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 21860952436 in words is "twenty-one billion, eight hundred sixty million, nine hundred fifty-two thousand, four hundred thirty-six".