5641861880 has 16 divisors (see below), whose sum is σ = 12694189320. Its totient is φ = 2256744736.

The previous prime is 5641861877. The next prime is 5641861891. The reversal of 5641861880 is 881681465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70523234 + ... + 70523313.

Almost surely, 2^5641861880 is an apocalyptic number.

It is an amenable number.

5641861880 is an abundant number, since it is smaller than the sum of its proper divisors (7052327440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5641861880 is a wasteful number, since it uses less digits than its factorization.

5641861880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141046558 (or 141046554 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 47.

The square root of 5641861880 is about 75112.3284155138. The cubic root of 5641861880 is about 1780.2219434569.

The spelling of 5641861880 in words is "five billion, six hundred forty-one million, eight hundred sixty-one thousand, eight hundred eighty".