78960437987 has 2 divisors, whose sum is σ = 78960437988. Its totient is φ = 78960437986.

The previous prime is 78960437971. The next prime is 78960438017. The reversal of 78960437987 is 78973406987.

It is a weak prime.

It is an emirp because it is prime and its reverse (78973406987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78960437987 - 2⁴ = 78960437971 is a prime.

It is a super-2 number, since 2×78960437987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78960437917) 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, 39480218993 + 39480218994.

It is an arithmetic number, because the mean of its divisors is an integer number (39480218994).

Almost surely, 2^78960437987 is an apocalyptic number.

78960437987 is a deficient number, since it is larger than the sum of its proper divisors (1).

78960437987 is an equidigital number, since it uses as much as digits as its factorization.

78960437987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128024064, while the sum is 68.

The spelling of 78960437987 in words is "seventy-eight billion, nine hundred sixty million, four hundred thirty-seven thousand, nine hundred eighty-seven".