21663024246512 has 40 divisors (see below), whose sum is σ = 45834911413632. Its totient is φ = 9836688209600.

The previous prime is 21663024246503. The next prime is 21663024246553. The reversal of 21663024246512 is 21564242036612.

It is a happy number.

It is a super-2 number, since 2×21663024246512² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 63209828 + ... + 63551619.

Almost surely, 2^{21663024246512} is an apocalyptic number.

21663024246512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21663024246512 is an abundant number, since it is smaller than the sum of its proper divisors (24171887167120).

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

21663024246512 is a wasteful number, since it uses less digits than its factorization.

21663024246512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126762437 (or 126762431 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 21663024246512 in words is "twenty-one trillion, six hundred sixty-three billion, twenty-four million, two hundred forty-six thousand, five hundred twelve".