45442721530 has 16 divisors (see below), whose sum is σ = 81811369224. Its totient is φ = 18173872960.

The previous prime is 45442721509. The next prime is 45442721579. The reversal of 45442721530 is 3512724454.

It can be written as a sum of positive squares in 4 ways, for example, as 38098745721 + 7343975809 = 195189^2 + 85697^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 45442721530.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 342181 + ... + 456040.

Almost surely, 2^45442721530 is an apocalyptic number.

45442721530 is a deficient number, since it is larger than the sum of its proper divisors (36368647694).

45442721530 is a wasteful number, since it uses less digits than its factorization.

45442721530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803921.

The product of its (nonzero) digits is 134400, while the sum is 37.

The spelling of 45442721530 in words is "forty-five billion, four hundred forty-two million, seven hundred twenty-one thousand, five hundred thirty".