63916188139 has 2 divisors, whose sum is σ = 63916188140. Its totient is φ = 63916188138.

The previous prime is 63916188041. The next prime is 63916188199. The reversal of 63916188139 is 93188161936.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63916188139 - 2²³ = 63907799531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63916188139.

It is not a weakly prime, because it can be changed into another prime (63916188199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31958094069 + 31958094070.

It is an arithmetic number, because the mean of its divisors is an integer number (31958094070).

Almost surely, 2^63916188139 is an apocalyptic number.

63916188139 is a deficient number, since it is larger than the sum of its proper divisors (1).

63916188139 is an equidigital number, since it uses as much as digits as its factorization.

63916188139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 55.

The spelling of 63916188139 in words is "sixty-three billion, nine hundred sixteen million, one hundred eighty-eight thousand, one hundred thirty-nine".