5643431672 has 16 divisors (see below), whose sum is σ = 10582329240. Its totient is φ = 2821477216.

The previous prime is 5643431669. The next prime is 5643431681. The reversal of 5643431672 is 2761343465.

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, 108323 + ... + 151725.

Almost surely, 2^5643431672 is an apocalyptic number.

It is an amenable number.

5643431672 is a deficient number, since it is larger than the sum of its proper divisors (4938897568).

5643431672 is a wasteful number, since it uses less digits than its factorization.

5643431672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59662 (or 59658 counting only the distinct ones).

The product of its digits is 362880, while the sum is 41.

The square root of 5643431672 is about 75122.7773182009. Note that the first 3 decimals coincide. The cubic root of 5643431672 is about 1780.3870378339.

The spelling of 5643431672 in words is "five billion, six hundred forty-three million, four hundred thirty-one thousand, six hundred seventy-two".