78533470774667 has 2 divisors, whose sum is σ = 78533470774668. Its totient is φ = 78533470774666.

The previous prime is 78533470774597. The next prime is 78533470774697. The reversal of 78533470774667 is 76647707433587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78533470774667 - 2²⁰ = 78533469726091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78533470774594 and 78533470774603.

It is not a weakly prime, because it can be changed into another prime (78533470774697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39266735387333 + 39266735387334.

It is an arithmetic number, because the mean of its divisors is an integer number (39266735387334).

Almost surely, 2^{78533470774667} is an apocalyptic number.

78533470774667 is a deficient number, since it is larger than the sum of its proper divisors (1).

78533470774667 is an equidigital number, since it uses as much as digits as its factorization.

78533470774667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3485099520, while the sum is 74.

The spelling of 78533470774667 in words is "seventy-eight trillion, five hundred thirty-three billion, four hundred seventy million, seven hundred seventy-four thousand, six hundred sixty-seven".