63187078117 has 2 divisors, whose sum is σ = 63187078118. Its totient is φ = 63187078116.

The previous prime is 63187078111. The next prime is 63187078147. The reversal of 63187078117 is 71187078136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63181346881 + 5731236 = 251359^2 + 2394^2 .

It is a cyclic number.

It is not a de Polignac number, because 63187078117 - 2³ = 63187078109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63187078111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31593539058 + 31593539059.

It is an arithmetic number, because the mean of its divisors is an integer number (31593539059).

Almost surely, 2^63187078117 is an apocalyptic number.

It is an amenable number.

63187078117 is a deficient number, since it is larger than the sum of its proper divisors (1).

63187078117 is an equidigital number, since it uses as much as digits as its factorization.

63187078117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 49.

The spelling of 63187078117 in words is "sixty-three billion, one hundred eighty-seven million, seventy-eight thousand, one hundred seventeen".