63313861312 has 56 divisors (see below), whose sum is σ = 135457058016. Its totient is φ = 29188497408.

The previous prime is 63313861283. The next prime is 63313861339. The reversal of 63313861312 is 21316831336.

It is a super-2 number, since 2×63313861312² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695088 + ... + 780880.

It is an arithmetic number, because the mean of its divisors is an integer number (2418876036).

Almost surely, 2^63313861312 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 63313861312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67728529008).

63313861312 is an abundant number, since it is smaller than the sum of its proper divisors (72143196704).

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

63313861312 is a wasteful number, since it uses less digits than its factorization.

63313861312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86705 (or 86695 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The spelling of 63313861312 in words is "sixty-three billion, three hundred thirteen million, eight hundred sixty-one thousand, three hundred twelve".