45440542390 has 16 divisors (see below), whose sum is σ = 82543372560. Its totient is φ = 18009462240.

The previous prime is 45440542387. The next prime is 45440542421. The reversal of 45440542390 is 9324504454.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20843196 + ... + 20845375.

It is an arithmetic number, because the mean of its divisors is an integer number (5158960785).

Almost surely, 2^45440542390 is an apocalyptic number.

45440542390 is a deficient number, since it is larger than the sum of its proper divisors (37102830170).

45440542390 is a wasteful number, since it uses less digits than its factorization.

45440542390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41688687.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 45440542390 in words is "forty-five billion, four hundred forty million, five hundred forty-two thousand, three hundred ninety".