63117189531 has 24 divisors (see below), whose sum is σ = 101770358976. Its totient is φ = 37363238640.

The previous prime is 63117189529. The next prime is 63117189589. The reversal of 63117189531 is 13598171136.

63117189531 is a `hidden beast` number, since 6 + 31 + 1 + 7 + 1 + 89 + 531 = 666.

It is not a de Polignac number, because 63117189531 - 2¹ = 63117189529 is a prime.

It is a super-2 number, since 2×63117189531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63117189521) 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, 7409085 + ... + 7417598.

It is an arithmetic number, because the mean of its divisors is an integer number (4240431624).

Almost surely, 2^63117189531 is an apocalyptic number.

63117189531 is a deficient number, since it is larger than the sum of its proper divisors (38653169445).

63117189531 is a wasteful number, since it uses less digits than its factorization.

63117189531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14826743 (or 14826740 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The spelling of 63117189531 in words is "sixty-three billion, one hundred seventeen million, one hundred eighty-nine thousand, five hundred thirty-one".