63840376512 has 336 divisors, whose sum is σ = 209176680960. Its totient is φ = 18426777600.

The previous prime is 63840376511. The next prime is 63840376513. The reversal of 63840376512 is 21567304836.

63840376512 is a `hidden beast` number, since 63 + 8 + 4 + 0 + 3 + 76 + 512 = 666.

It is an interprime number because it is at equal distance from previous prime (63840376511) and next prime (63840376513).

It is a super-2 number, since 2×63840376512² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63840376511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40948789 + ... + 40950347.

Almost surely, 2^63840376512 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 63840376512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104588340480).

63840376512 is an abundant number, since it is smaller than the sum of its proper divisors (145336304448).

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

63840376512 is a wasteful number, since it uses less digits than its factorization.

63840376512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 63840376512 in words is "sixty-three billion, eight hundred forty million, three hundred seventy-six thousand, five hundred twelve".