6431559554112 has 896 divisors, whose sum is σ = 21979589345280. Its totient is φ = 1611787223040.

The previous prime is 6431559554071. The next prime is 6431559554179. The reversal of 6431559554112 is 2114559551346.

It is a super-2 number, since 2×6431559554112² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12786400453 + ... + 12786400955.

It is an arithmetic number, because the mean of its divisors is an integer number (24530791680).

Almost surely, 2^{6431559554112} 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 6431559554112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10989794672640).

6431559554112 is an abundant number, since it is smaller than the sum of its proper divisors (15548029791168).

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

6431559554112 is a wasteful number, since it uses less digits than its factorization.

6431559554112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 829 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 51.

The spelling of 6431559554112 in words is "six trillion, four hundred thirty-one billion, five hundred fifty-nine million, five hundred fifty-four thousand, one hundred twelve".