45505420744639 has 16 divisors (see below), whose sum is σ = 48263661831168. Its totient is φ = 42756279656832.

The previous prime is 45505420744633. The next prime is 45505420744643. The reversal of 45505420744639 is 93644702450554.

It is a cyclic number.

It is not a de Polignac number, because 45505420744639 - 2¹⁵ = 45505420711871 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 (45505420744633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28507954 + ... + 30061840.

It is an arithmetic number, because the mean of its divisors is an integer number (3016478864448).

Almost surely, 2^{45505420744639} is an apocalyptic number.

45505420744639 is a deficient number, since it is larger than the sum of its proper divisors (2758241086529).

45505420744639 is a wasteful number, since it uses less digits than its factorization.

45505420744639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556814.

The product of its (nonzero) digits is 72576000, while the sum is 58.

The spelling of 45505420744639 in words is "forty-five trillion, five hundred five billion, four hundred twenty million, seven hundred forty-four thousand, six hundred thirty-nine".