45031386779 has 4 divisors (see below), whose sum is σ = 46078628376. Its totient is φ = 43984145184.

The previous prime is 45031386761. The next prime is 45031386857. The reversal of 45031386779 is 97768313054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97768313054 = 2 ⋅48884156527.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45031386779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45031386779.

It is not an unprimeable number, because it can be changed into a prime (45031382779) 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, 523620734 + ... + 523620819.

It is an arithmetic number, because the mean of its divisors is an integer number (11519657094).

Almost surely, 2^45031386779 is an apocalyptic number.

45031386779 is a deficient number, since it is larger than the sum of its proper divisors (1047241597).

45031386779 is a wasteful number, since it uses less digits than its factorization.

45031386779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047241596.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 45031386779 in words is "forty-five billion, thirty-one million, three hundred eighty-six thousand, seven hundred seventy-nine".