45441022561 has 9 divisors (see below), whose sum is σ = 49950147793. Its totient is φ = 41307888820.

The previous prime is 45441022531. The next prime is 45441022579. The reversal of 45441022561 is 16522014454.

The square root of 45441022561 is 213169.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 45441022561 - 2⁷ = 45441022433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45441022511) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2335170 + ... + 2354548.

Almost surely, 2^45441022561 is an apocalyptic number.

45441022561 is the 213169-th square number.

45441022561 is the 106585-th centered octagonal number.

It is an amenable number.

45441022561 is a deficient number, since it is larger than the sum of its proper divisors (4509125232).

45441022561 is an frugal number, since it uses more digits than its factorization.

45441022561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38780 (or 19390 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 45441022561 in words is "forty-five billion, four hundred forty-one million, twenty-two thousand, five hundred sixty-one".