21963852084 has 24 divisors (see below), whose sum is σ = 51506526400. Its totient is φ = 7284492864.

The previous prime is 21963852041. The next prime is 21963852091. The reversal of 21963852084 is 48025836912.

It is a super-2 number, since 2×21963852084² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 4596409 + ... + 4601184.

Almost surely, 2^21963852084 is an apocalyptic number.

It is an amenable number.

21963852084 is an abundant number, since it is smaller than the sum of its proper divisors (29542674316).

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

21963852084 is a wasteful number, since it uses less digits than its factorization.

21963852084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9197799 (or 9197797 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 21963852084 in words is "twenty-one billion, nine hundred sixty-three million, eight hundred fifty-two thousand, eighty-four".