78417876767 has 2 divisors, whose sum is σ = 78417876768. Its totient is φ = 78417876766.

The previous prime is 78417876739. The next prime is 78417876827. The reversal of 78417876767 is 76767871487.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78417876767 - 2³⁴ = 61238007583 is a prime.

It is a super-2 number, since 2×78417876767² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78417876697 and 78417876706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78417806767) 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, 39208938383 + 39208938384.

It is an arithmetic number, because the mean of its divisors is an integer number (39208938384).

Almost surely, 2^78417876767 is an apocalyptic number.

78417876767 is a deficient number, since it is larger than the sum of its proper divisors (1).

78417876767 is an equidigital number, since it uses as much as digits as its factorization.

78417876767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 154893312, while the sum is 68.

The spelling of 78417876767 in words is "seventy-eight billion, four hundred seventeen million, eight hundred seventy-six thousand, seven hundred sixty-seven".