63679257387 has 6 divisors (see below), whose sum is σ = 91981149572. Its totient is φ = 42452838252.

The previous prime is 63679257361. The next prime is 63679257391. The reversal of 63679257387 is 78375297636.

63679257387 is a `hidden beast` number, since 63 + 67 + 92 + 57 + 387 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-63679257387 is a prime.

It is a super-3 number, since 3×63679257387³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63679250387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3537736513 + ... + 3537736530.

Almost surely, 2^63679257387 is an apocalyptic number.

63679257387 is a deficient number, since it is larger than the sum of its proper divisors (28301892185).

63679257387 is a wasteful number, since it uses less digits than its factorization.

63679257387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7075473049 (or 7075473046 counting only the distinct ones).

The product of its digits is 80015040, while the sum is 63.

The spelling of 63679257387 in words is "sixty-three billion, six hundred seventy-nine million, two hundred fifty-seven thousand, three hundred eighty-seven".