63108831541251 has 4 divisors (see below), whose sum is σ = 84145108721672. Its totient is φ = 42072554360832.

The previous prime is 63108831541237. The next prime is 63108831541277. The reversal of 63108831541251 is 15214513880136.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 63108831541251 - 2²² = 63108827346947 is a prime.

It is a super-2 number, since 2×63108831541251² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63108831541251.

It is not an unprimeable number, because it can be changed into a prime (63108831541291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10518138590206 + ... + 10518138590211.

It is an arithmetic number, because the mean of its divisors is an integer number (21036277180418).

Almost surely, 2^{63108831541251} is an apocalyptic number.

63108831541251 is a deficient number, since it is larger than the sum of its proper divisors (21036277180421).

63108831541251 is a wasteful number, since it uses less digits than its factorization.

63108831541251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21036277180420.

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 63108831541251 in words is "sixty-three trillion, one hundred eight billion, eight hundred thirty-one million, five hundred forty-one thousand, two hundred fifty-one".