44694663874561 has 4 divisors (see below), whose sum is σ = 44694692241412. Its totient is φ = 44694635507712.

The previous prime is 44694663874477. The next prime is 44694663874577. The reversal of 44694663874561 is 16547836649644.

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 37555828014961 + 7138835859600 = 6128281^2 + 2671860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44694663874561 is a prime.

It is a super-2 number, since 2×44694663874561² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44694660874561) 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, 11671776 + ... + 15020641.

It is an arithmetic number, because the mean of its divisors is an integer number (11173673060353).

Almost surely, 2^{44694663874561} is an apocalyptic number.

It is an amenable number.

44694663874561 is a deficient number, since it is larger than the sum of its proper divisors (28366851).

44694663874561 is a wasteful number, since it uses less digits than its factorization.

44694663874561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28366850.

The product of its digits is 2508226560, while the sum is 73.

The spelling of 44694663874561 in words is "forty-four trillion, six hundred ninety-four billion, six hundred sixty-three million, eight hundred seventy-four thousand, five hundred sixty-one".