78617494583 has 2 divisors, whose sum is σ = 78617494584. Its totient is φ = 78617494582.

The previous prime is 78617494537. The next prime is 78617494601. The reversal of 78617494583 is 38549471687.

It is a strong prime.

It is an emirp because it is prime and its reverse (38549471687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78617494583 - 2⁶ = 78617494519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78617494783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39308747291 + 39308747292.

It is an arithmetic number, because the mean of its divisors is an integer number (39308747292).

Almost surely, 2^78617494583 is an apocalyptic number.

78617494583 is a deficient number, since it is larger than the sum of its proper divisors (1).

78617494583 is an equidigital number, since it uses as much as digits as its factorization.

78617494583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 62.

The spelling of 78617494583 in words is "seventy-eight billion, six hundred seventeen million, four hundred ninety-four thousand, five hundred eighty-three".