63627837138 has 36 divisors (see below), whose sum is σ = 141687024570. Its totient is φ = 20636047296.

The previous prime is 63627837113. The next prime is 63627837139. The reversal of 63627837138 is 83173872636.

63627837138 is a `hidden beast` number, since 6 + 3 + 627 + 8 + 3 + 7 + 1 + 3 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 62962351929 + 665485209 = 250923^2 + 25797^2 .

It is not an unprimeable number, because it can be changed into a prime (63627837139) 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 17 ways as a sum of consecutive naturals, for example, 1266403 + ... + 1315686.

Almost surely, 2^63627837138 is an apocalyptic number.

63627837138 is an abundant number, since it is smaller than the sum of its proper divisors (78059187432).

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

63627837138 is a wasteful number, since it uses less digits than its factorization.

63627837138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582171 (or 2582131 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The spelling of 63627837138 in words is "sixty-three billion, six hundred twenty-seven million, eight hundred thirty-seven thousand, one hundred thirty-eight".