45185869439 has 4 divisors (see below), whose sum is σ = 46236703656. Its totient is φ = 44135035224.

The previous prime is 45185869363. The next prime is 45185869447. The reversal of 45185869439 is 93496858154.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-45185869439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45185869459) 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 3 ways as a sum of consecutive naturals, for example, 525417044 + ... + 525417129.

It is an arithmetic number, because the mean of its divisors is an integer number (11559175914).

Almost surely, 2^45185869439 is an apocalyptic number.

45185869439 is a deficient number, since it is larger than the sum of its proper divisors (1050834217).

45185869439 is a wasteful number, since it uses less digits than its factorization.

45185869439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050834216.

The product of its digits is 37324800, while the sum is 62.

The spelling of 45185869439 in words is "forty-five billion, one hundred eighty-five million, eight hundred sixty-nine thousand, four hundred thirty-nine".