63999999999907 has 2 divisors, whose sum is σ = 63999999999908. Its totient is φ = 63999999999906.

The previous prime is 63999999999839. The next prime is 63999999999911. The reversal of 63999999999907 is 70999999999936.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63999999999907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63999999999907.

It is not a weakly prime, because it can be changed into another prime (63999999999917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31999999999953 + 31999999999954.

It is an arithmetic number, because the mean of its divisors is an integer number (31999999999954).

Almost surely, 2^{63999999999907} is an apocalyptic number.

63999999999907 is a deficient number, since it is larger than the sum of its proper divisors (1).

63999999999907 is an equidigital number, since it uses as much as digits as its factorization.

63999999999907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 439334834526, while the sum is 106.

The spelling of 63999999999907 in words is "sixty-three trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seven".