63251731375512 has 128 divisors (see below), whose sum is σ = 167183573356800. Its totient is φ = 19886450890752.

The previous prime is 63251731375463. The next prime is 63251731375513. The reversal of 63251731375512 is 21557313715236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63251731375513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1279519948 + ... + 1279569380.

It is an arithmetic number, because the mean of its divisors is an integer number (1306121666850).

Almost surely, 2^{63251731375512} 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 63251731375512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83591786678400).

63251731375512 is an abundant number, since it is smaller than the sum of its proper divisors (103931841981288).

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

63251731375512 is a wasteful number, since it uses less digits than its factorization.

63251731375512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61737 (or 61733 counting only the distinct ones).

The product of its digits is 3969000, while the sum is 51.

The spelling of 63251731375512 in words is "sixty-three trillion, two hundred fifty-one billion, seven hundred thirty-one million, three hundred seventy-five thousand, five hundred twelve".