5191248644 has 12 divisors (see below), whose sum is σ = 9119229504. Its totient is φ = 2585754504.

The previous prime is 5191248599. The next prime is 5191248677. The reversal of 5191248644 is 4468421915.

It is a junction number, because it is equal to n+sod(n) for n = 5191248595 and 5191248604.

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, 2466272 + ... + 2468375.

It is an arithmetic number, because the mean of its divisors is an integer number (759935792).

Almost surely, 2^5191248644 is an apocalyptic number.

It is an amenable number.

5191248644 is a deficient number, since it is larger than the sum of its proper divisors (3927980860).

5191248644 is a wasteful number, since it uses less digits than its factorization.

5191248644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4934914 (or 4934912 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 5191248644 is about 72050.3202213564. The cubic root of 5191248644 is about 1731.5057717761.

The spelling of 5191248644 in words is "five billion, one hundred ninety-one million, two hundred forty-eight thousand, six hundred forty-four".