5641356641 has 4 divisors (see below), whose sum is σ = 5643189552. Its totient is φ = 5639523732.

The previous prime is 5641356629. The next prime is 5641356649. The reversal of 5641356641 is 1466531465.

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 5641356641 - 2¹⁰ = 5641355617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5641356649) 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, 911831 + ... + 917996.

It is an arithmetic number, because the mean of its divisors is an integer number (1410797388).

Almost surely, 2^5641356641 is an apocalyptic number.

It is an amenable number.

5641356641 is a deficient number, since it is larger than the sum of its proper divisors (1832911).

5641356641 is a wasteful number, since it uses less digits than its factorization.

5641356641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832910.

The product of its digits is 259200, while the sum is 41.

The square root of 5641356641 is about 75108.9651173547. The cubic root of 5641356641 is about 1780.1688011655.

The spelling of 5641356641 in words is "five billion, six hundred forty-one million, three hundred fifty-six thousand, six hundred forty-one".