6644254131 has 12 divisors (see below), whose sum is σ = 9686951352. Its totient is φ = 4388104896.

The previous prime is 6644254103. The next prime is 6644254163. The reversal of 6644254131 is 1314524466.

6644254131 is a `hidden beast` number, since 6 + 644 + 2 + 5 + 4 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 6644254131 - 2⁹ = 6644253619 is a prime.

It is a super-2 number, since 2×6644254131² = 88292225914621130322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6644254181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3448806 + ... + 3450731.

It is an arithmetic number, because the mean of its divisors is an integer number (807245946).

Almost surely, 2^6644254131 is an apocalyptic number.

6644254131 is a deficient number, since it is larger than the sum of its proper divisors (3042697221).

6644254131 is a wasteful number, since it uses less digits than its factorization.

6644254131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6899650 (or 6899647 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 6644254131 is about 81512.2943549008. The cubic root of 6644254131 is about 1879.9605894673.

Adding to 6644254131 its reverse (1314524466), we get a palindrome (7958778597).

The spelling of 6644254131 in words is "six billion, six hundred forty-four million, two hundred fifty-four thousand, one hundred thirty-one".