63712993667 has 2 divisors, whose sum is σ = 63712993668. Its totient is φ = 63712993666.

The previous prime is 63712993639. The next prime is 63712993733. The reversal of 63712993667 is 76639921736.

It is a happy number.

63712993667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63712993667 - 2³⁴ = 46533124483 is a prime.

It is a super-2 number, since 2×63712993667² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63712993627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31856496833 + 31856496834.

It is an arithmetic number, because the mean of its divisors is an integer number (31856496834).

Almost surely, 2^63712993667 is an apocalyptic number.

63712993667 is a deficient number, since it is larger than the sum of its proper divisors (1).

63712993667 is an equidigital number, since it uses as much as digits as its factorization.

63712993667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15431472, while the sum is 59.

The spelling of 63712993667 in words is "sixty-three billion, seven hundred twelve million, nine hundred ninety-three thousand, six hundred sixty-seven".