78788614031 has 2 divisors, whose sum is σ = 78788614032. Its totient is φ = 78788614030.

The previous prime is 78788613857. The next prime is 78788614039. The reversal of 78788614031 is 13041688787.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78788614031 is a prime.

It is a super-2 number, since 2×78788614031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78788614039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39394307015 + 39394307016.

It is an arithmetic number, because the mean of its divisors is an integer number (39394307016).

Almost surely, 2^78788614031 is an apocalyptic number.

78788614031 is a deficient number, since it is larger than the sum of its proper divisors (1).

78788614031 is an equidigital number, since it uses as much as digits as its factorization.

78788614031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1806336, while the sum is 53.

The spelling of 78788614031 in words is "seventy-eight billion, seven hundred eighty-eight million, six hundred fourteen thousand, thirty-one".