5731721726 has 16 divisors (see below), whose sum is σ = 8839154160. Its totient is φ = 2785498560.

The previous prime is 5731721707. The next prime is 5731721747. The reversal of 5731721726 is 6271271375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31970 + ... + 111738.

It is an arithmetic number, because the mean of its divisors is an integer number (552447135).

Almost surely, 2^5731721726 is an apocalyptic number.

5731721726 is a deficient number, since it is larger than the sum of its proper divisors (3107432434).

5731721726 is a wasteful number, since it uses less digits than its factorization.

5731721726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80779.

The product of its digits is 123480, while the sum is 41.

The square root of 5731721726 is about 75708.1351375135. The cubic root of 5731721726 is about 1789.6236036394.

The spelling of 5731721726 in words is "five billion, seven hundred thirty-one million, seven hundred twenty-one thousand, seven hundred twenty-six".