78150116987 has 2 divisors, whose sum is σ = 78150116988. Its totient is φ = 78150116986.

The previous prime is 78150116981. The next prime is 78150117011. The reversal of 78150116987 is 78961105187.

It is a weak prime.

It is an emirp because it is prime and its reverse (78961105187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78150116987 - 2⁴ = 78150116971 is a prime.

It is a super-2 number, since 2×78150116987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78150116981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39075058493 + 39075058494.

It is an arithmetic number, because the mean of its divisors is an integer number (39075058494).

Almost surely, 2^78150116987 is an apocalyptic number.

78150116987 is a deficient number, since it is larger than the sum of its proper divisors (1).

78150116987 is an equidigital number, since it uses as much as digits as its factorization.

78150116987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 53.

The spelling of 78150116987 in words is "seventy-eight billion, one hundred fifty million, one hundred sixteen thousand, nine hundred eighty-seven".