5731661878 has 16 divisors (see below), whose sum is σ = 8719652160. Its totient is φ = 2825222400.

The previous prime is 5731661867. The next prime is 5731661899. The reversal of 5731661878 is 8781661375.

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, 76998 + ... + 131878.

It is an arithmetic number, because the mean of its divisors is an integer number (544978260).

Almost surely, 2^5731661878 is an apocalyptic number.

5731661878 is a deficient number, since it is larger than the sum of its proper divisors (2987990282).

5731661878 is a wasteful number, since it uses less digits than its factorization.

5731661878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55623.

The product of its digits is 1693440, while the sum is 52.

The square root of 5731661878 is about 75707.7398817320. The cubic root of 5731661878 is about 1789.6173748091.

The spelling of 5731661878 in words is "five billion, seven hundred thirty-one million, six hundred sixty-one thousand, eight hundred seventy-eight".