78795506539 has 2 divisors, whose sum is σ = 78795506540. Its totient is φ = 78795506538.

The previous prime is 78795506513. The next prime is 78795506561. The reversal of 78795506539 is 93560559787.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78795506539 - 2⁷ = 78795506411 is a prime.

It is not a weakly prime, because it can be changed into another prime (78795501539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39397753269 + 39397753270.

It is an arithmetic number, because the mean of its divisors is an integer number (39397753270).

Almost surely, 2^78795506539 is an apocalyptic number.

78795506539 is a deficient number, since it is larger than the sum of its proper divisors (1).

78795506539 is an equidigital number, since it uses as much as digits as its factorization.

78795506539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442000, while the sum is 64.

The spelling of 78795506539 in words is "seventy-eight billion, seven hundred ninety-five million, five hundred six thousand, five hundred thirty-nine".