44563402561 has 4 divisors (see below), whose sum is σ = 44567865792. Its totient is φ = 44558939332.

The previous prime is 44563402553. The next prime is 44563402567. The reversal of 44563402561 is 16520436544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44563402561 - 2³ = 44563402553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44563402567) 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, 2216605 + ... + 2236618.

It is an arithmetic number, because the mean of its divisors is an integer number (11141966448).

Almost surely, 2^44563402561 is an apocalyptic number.

It is an amenable number.

44563402561 is a deficient number, since it is larger than the sum of its proper divisors (4463231).

44563402561 is a wasteful number, since it uses less digits than its factorization.

44563402561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4463230.

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

The spelling of 44563402561 in words is "forty-four billion, five hundred sixty-three million, four hundred two thousand, five hundred sixty-one".