63831255408 has 120 divisors (see below), whose sum is σ = 183249271296. Its totient is φ = 20729395200.

The previous prime is 63831255401. The next prime is 63831255419. The reversal of 63831255408 is 80455213836.

63831255408 is a `hidden beast` number, since 6 + 3 + 83 + 1 + 25 + 540 + 8 = 666.

It is a super-2 number, since 2×63831255408² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63831255401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4485841 + ... + 4500047.

Almost surely, 2^63831255408 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 63831255408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91624635648).

63831255408 is an abundant number, since it is smaller than the sum of its proper divisors (119418015888).

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

63831255408 is a wasteful number, since it uses less digits than its factorization.

63831255408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15023 (or 15014 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 63831255408 in words is "sixty-three billion, eight hundred thirty-one million, two hundred fifty-five thousand, four hundred eight".