63130881285 has 24 divisors (see below), whose sum is σ = 109531258200. Its totient is φ = 33637681152.

The previous prime is 63130881269. The next prime is 63130881311. The reversal of 63130881285 is 58218803136.

63130881285 is a `hidden beast` number, since 63 + 1 + 308 + 8 + 1 + 285 = 666.

63130881285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 21755660004 + 41375221281 = 147498^2 + 203409^2 .

It is not a de Polignac number, because 63130881285 - 2⁴ = 63130881269 is a prime.

It is a super-3 number, since 3×63130881285³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 63130881285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 621484 + ... + 715893.

It is an arithmetic number, because the mean of its divisors is an integer number (4563802425).

Almost surely, 2^63130881285 is an apocalyptic number.

It is an amenable number.

63130881285 is a deficient number, since it is larger than the sum of its proper divisors (46400376915).

63130881285 is a wasteful number, since it uses less digits than its factorization.

63130881285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338437 (or 1338434 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 63130881285 in words is "sixty-three billion, one hundred thirty million, eight hundred eighty-one thousand, two hundred eighty-five".