6631612439 has 16 divisors (see below), whose sum is σ = 7138523520. Its totient is φ = 6148396800.

The previous prime is 6631612423. The next prime is 6631612447. The reversal of 6631612439 is 9342161366.

It is a cyclic number.

It is not a de Polignac number, because 6631612439 - 2⁴ = 6631612423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6631612396 and 6631612405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631612409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26339 + ... + 118139.

It is an arithmetic number, because the mean of its divisors is an integer number (446157720).

Almost surely, 2^6631612439 is an apocalyptic number.

6631612439 is a deficient number, since it is larger than the sum of its proper divisors (506911081).

6631612439 is a wasteful number, since it uses less digits than its factorization.

6631612439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91930.

The product of its digits is 139968, while the sum is 41.

The square root of 6631612439 is about 81434.7127397156. The cubic root of 6631612439 is about 1878.7675299732.

The spelling of 6631612439 in words is "six billion, six hundred thirty-one million, six hundred twelve thousand, four hundred thirty-nine".