5641635633561 has 24 divisors (see below), whose sum is σ = 8503895811840. Its totient is φ = 3597327429696.

The previous prime is 5641635633553. The next prime is 5641635633563. The reversal of 5641635633561 is 1653365361465.

5641635633561 is a `hidden beast` number, since 5 + 6 + 4 + 16 + 3 + 5 + 63 + 3 + 561 = 666.

5641635633561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5641635633561 - 2³ = 5641635633553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5641635633498 and 5641635633507.

It is not an unprimeable number, because it can be changed into a prime (5641635633563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2273520 + ... + 4056126.

It is an arithmetic number, because the mean of its divisors is an integer number (354328992160).

Almost surely, 2^{5641635633561} is an apocalyptic number.

It is an amenable number.

5641635633561 is a deficient number, since it is larger than the sum of its proper divisors (2862260178279).

5641635633561 is a wasteful number, since it uses less digits than its factorization.

5641635633561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797925 (or 1797922 counting only the distinct ones).

The product of its digits is 17496000, while the sum is 54.

The spelling of 5641635633561 in words is "five trillion, six hundred forty-one billion, six hundred thirty-five million, six hundred thirty-three thousand, five hundred sixty-one".