45045588961 has 4 divisors (see below), whose sum is σ = 45347908500. Its totient is φ = 44743269424.

The previous prime is 45045588923. The next prime is 45045588967. The reversal of 45045588961 is 16988554054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8150478400 + 36895110561 = 90280^2 + 192081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45045588961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45045588967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151159546 + ... + 151159843.

It is an arithmetic number, because the mean of its divisors is an integer number (11336977125).

Almost surely, 2^45045588961 is an apocalyptic number.

It is an amenable number.

45045588961 is a deficient number, since it is larger than the sum of its proper divisors (302319539).

45045588961 is a wasteful number, since it uses less digits than its factorization.

45045588961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302319538.

The product of its (nonzero) digits is 6912000, while the sum is 55.

The spelling of 45045588961 in words is "forty-five billion, forty-five million, five hundred eighty-eight thousand, nine hundred sixty-one".