5091864644 has 12 divisors (see below), whose sum is σ = 9379750800. Its totient is φ = 2411935848.

The previous prime is 5091864641. The next prime is 5091864697. The reversal of 5091864644 is 4464681905.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5091864641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33499034 + ... + 33499185.

It is an arithmetic number, because the mean of its divisors is an integer number (781645900).

Almost surely, 2^5091864644 is an apocalyptic number.

It is an amenable number.

5091864644 is a deficient number, since it is larger than the sum of its proper divisors (4287886156).

5091864644 is a wasteful number, since it uses less digits than its factorization.

5091864644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66998242 (or 66998240 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 5091864644 is about 71357.3026676317. The cubic root of 5091864644 is about 1720.3848791669.

The spelling of 5091864644 in words is "five billion, ninety-one million, eight hundred sixty-four thousand, six hundred forty-four".