421995054832992 has 192 divisors, whose sum is σ = 1272918031257600. Its totient is φ = 135929459128320.

The previous prime is 421995054832987. The next prime is 421995054832993. The reversal of 421995054832992 is 299238450599124.

421995054832992 is a `hidden beast` number, since 4 + 2 + 1 + 9 + 9 + 50 + 5 + 483 + 2 + 9 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 421995054832992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421995054832993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62563609 + ... + 68979672.

It is an arithmetic number, because the mean of its divisors is an integer number (6629781412800).

Almost surely, 2^{421995054832992} is an apocalyptic number.

It is an amenable number.

421995054832992 is an abundant number, since it is smaller than the sum of its proper divisors (850922976424608).

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

421995054832992 is a wasteful number, since it uses less digits than its factorization.

421995054832992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131543426 (or 131543412 counting only the distinct ones).

The product of its (nonzero) digits is 503884800, while the sum is 72.

The spelling of 421995054832992 in words is "four hundred twenty-one trillion, nine hundred ninety-five billion, fifty-four million, eight hundred thirty-two thousand, nine hundred ninety-two".