5721640899 has 16 divisors (see below), whose sum is σ = 8221312512. Its totient is φ = 3518599968.

The previous prime is 5721640823. The next prime is 5721640901. The reversal of 5721640899 is 9980461275.

It is not a de Polignac number, because 5721640899 - 2²⁴ = 5704863683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5721640399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8374 + ... + 107300.

It is an arithmetic number, because the mean of its divisors is an integer number (513832032).

Almost surely, 2^5721640899 is an apocalyptic number.

5721640899 is a deficient number, since it is larger than the sum of its proper divisors (2499671613).

5721640899 is a wasteful number, since it uses less digits than its factorization.

5721640899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100426.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 5721640899 is about 75641.5289308724. The cubic root of 5721640899 is about 1788.5738043067.

The spelling of 5721640899 in words is "five billion, seven hundred twenty-one million, six hundred forty thousand, eight hundred ninety-nine".