45138401765 has 16 divisors (see below), whose sum is σ = 54464462832. Its totient is φ = 35912346624.

The previous prime is 45138401753. The next prime is 45138401773. The reversal of 45138401765 is 56710483154.

45138401765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 212458²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 45138401764 = 1^2 + 212458^2 .

It is a cyclic number.

It is not a de Polignac number, because 45138401765 - 2¹² = 45138397669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635207 + ... + 702683.

It is an arithmetic number, because the mean of its divisors is an integer number (3404028927).

Almost surely, 2^45138401765 is an apocalyptic number.

It is an amenable number.

45138401765 is a deficient number, since it is larger than the sum of its proper divisors (9326061067).

45138401765 is a wasteful number, since it uses less digits than its factorization.

45138401765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68216.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 45138401765 in words is "forty-five billion, one hundred thirty-eight million, four hundred one thousand, seven hundred sixty-five".