6431197679616 has 208 divisors, whose sum is σ = 17365586812928. Its totient is φ = 2116664524800.

The previous prime is 6431197679609. The next prime is 6431197679681. The reversal of 6431197679616 is 6169767911346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329271771 + ... + 329291301.

Almost surely, 2^{6431197679616} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6431197679616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8682793406464).

6431197679616 is an abundant number, since it is smaller than the sum of its proper divisors (10934389133312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6431197679616 is a wasteful number, since it uses less digits than its factorization.

6431197679616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19896 (or 19874 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 66.

The spelling of 6431197679616 in words is "six trillion, four hundred thirty-one billion, one hundred ninety-seven million, six hundred seventy-nine thousand, six hundred sixteen".