45042907889 has 32 divisors (see below), whose sum is σ = 55441428480. Its totient is φ = 35717430528.

The previous prime is 45042907843. The next prime is 45042907891. The reversal of 45042907889 is 98870924054.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45042907889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45042907829) 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 31 ways as a sum of consecutive naturals, for example, 2123474 + ... + 2144580.

It is an arithmetic number, because the mean of its divisors is an integer number (1732544640).

Almost surely, 2^45042907889 is an apocalyptic number.

It is an amenable number.

45042907889 is a deficient number, since it is larger than the sum of its proper divisors (10398520591).

45042907889 is a wasteful number, since it uses less digits than its factorization.

45042907889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21437.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 45042907889 in words is "forty-five billion, forty-two million, nine hundred seven thousand, eight hundred eighty-nine".