45443115621 has 12 divisors (see below), whose sum is σ = 65680570540. Its totient is φ = 30276711360.

The previous prime is 45443115617. The next prime is 45443115629. The reversal of 45443115621 is 12651134454.

45443115621 is a `hidden beast` number, since 4 + 54 + 43 + 1 + 1 + 562 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16981738596 + 28461377025 = 130314^2 + 168705^2 .

It is not a de Polignac number, because 45443115621 - 2² = 45443115617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45443115629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1542856 + ... + 1572033.

Almost surely, 2^45443115621 is an apocalyptic number.

It is an amenable number.

45443115621 is a deficient number, since it is larger than the sum of its proper divisors (20237454919).

45443115621 is a wasteful number, since it uses less digits than its factorization.

45443115621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116516 (or 3116513 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The spelling of 45443115621 in words is "forty-five billion, four hundred forty-three million, one hundred fifteen thousand, six hundred twenty-one".