646043114625552 has 480 divisors, whose sum is σ = 2223752486731776. Its totient is φ = 171183254860800.

The previous prime is 646043114625511. The next prime is 646043114625641. The reversal of 646043114625552 is 255526411340646.

646043114625552 is a `hidden beast` number, since 6 + 4 + 6 + 0 + 4 + 3 + 1 + 1 + 4 + 625 + 5 + 5 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 66678277 + ... + 75750107.

Almost surely, 2^{646043114625552} is an apocalyptic number.

646043114625552 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646043114625552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1111876243365888).

646043114625552 is an abundant number, since it is smaller than the sum of its proper divisors (1577709372106224).

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

646043114625552 is a wasteful number, since it uses less digits than its factorization.

646043114625552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9071979 (or 9071970 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 54.

The spelling of 646043114625552 in words is "six hundred forty-six trillion, forty-three billion, one hundred fourteen million, six hundred twenty-five thousand, five hundred fifty-two".