63704912139 has 12 divisors (see below), whose sum is σ = 100383498072. Its totient is φ = 38609037600.

The previous prime is 63704912137. The next prime is 63704912143. The reversal of 63704912139 is 93121940736.

63704912139 is a `hidden beast` number, since 63 + 70 + 491 + 2 + 1 + 39 = 666.

It is not a de Polignac number, because 63704912139 - 2¹ = 63704912137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63704912094 and 63704912103.

It is not an unprimeable number, because it can be changed into a prime (63704912137) 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 11 ways as a sum of consecutive naturals, for example, 321741882 + ... + 321742079.

It is an arithmetic number, because the mean of its divisors is an integer number (8365291506).

Almost surely, 2^63704912139 is an apocalyptic number.

63704912139 is a deficient number, since it is larger than the sum of its proper divisors (36678585933).

63704912139 is a wasteful number, since it uses less digits than its factorization.

63704912139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643483978 (or 643483975 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 63704912139 in words is "sixty-three billion, seven hundred four million, nine hundred twelve thousand, one hundred thirty-nine".