45149399791 has 4 divisors (see below), whose sum is σ = 45209519584. Its totient is φ = 45089280000.

The previous prime is 45149399777. The next prime is 45149399797. The reversal of 45149399791 is 19799394154.

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

It is a cyclic number.

It is not a de Polignac number, because 45149399791 - 2⁵ = 45149399759 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 (45149399797) 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, 30058770 + ... + 30060271.

It is an arithmetic number, because the mean of its divisors is an integer number (11302379896).

Almost surely, 2^45149399791 is an apocalyptic number.

45149399791 is a deficient number, since it is larger than the sum of its proper divisors (60119793).

45149399791 is an equidigital number, since it uses as much as digits as its factorization.

45149399791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60119792.

The product of its digits is 11022480, while the sum is 61.

The spelling of 45149399791 in words is "forty-five billion, one hundred forty-nine million, three hundred ninety-nine thousand, seven hundred ninety-one".