43621425992 has 8 divisors (see below), whose sum is σ = 81790173750. Its totient is φ = 21810712992.

The previous prime is 43621425949. The next prime is 43621426027. The reversal of 43621425992 is 29952412634.

It can be written as a sum of positive squares in only one way, i.e., 42942615076 + 678810916 = 207226^2 + 26054^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2726339117 + ... + 2726339132.

Almost surely, 2^43621425992 is an apocalyptic number.

It is an amenable number.

43621425992 is a deficient number, since it is larger than the sum of its proper divisors (38168747758).

43621425992 is a wasteful number, since it uses less digits than its factorization.

43621425992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5452678255 (or 5452678251 counting only the distinct ones).

The product of its digits is 933120, while the sum is 47.

The spelling of 43621425992 in words is "forty-three billion, six hundred twenty-one million, four hundred twenty-five thousand, nine hundred ninety-two".