21963528675 has 240 divisors, whose sum is σ = 48535179264. Its totient is φ = 9694080000.

The previous prime is 21963528647. The next prime is 21963528679. The reversal of 21963528675 is 57682536912.

21963528675 is a `hidden beast` number, since 21 + 96 + 3 + 528 + 6 + 7 + 5 = 666.

It is not a de Polignac number, because 21963528675 - 2⁶ = 21963528611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21963528679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 11737990 + ... + 11739860.

Almost surely, 2^21963528675 is an apocalyptic number.

21963528675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21963528675 is an abundant number, since it is smaller than the sum of its proper divisors (26571650589).

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

21963528675 is a wasteful number, since it uses less digits than its factorization.

21963528675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1938 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 21963528675 in words is "twenty-one billion, nine hundred sixty-three million, five hundred twenty-eight thousand, six hundred seventy-five".