78553792446979 has 2 divisors, whose sum is σ = 78553792446980. Its totient is φ = 78553792446978.

The previous prime is 78553792446937. The next prime is 78553792447001. The reversal of 78553792446979 is 97964429735587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78553792446979 - 2²⁹ = 78553255576067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78553792446896 and 78553792446905.

It is not a weakly prime, because it can be changed into another prime (78553799446979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39276896223489 + 39276896223490.

It is an arithmetic number, because the mean of its divisors is an integer number (39276896223490).

Almost surely, 2^{78553792446979} is an apocalyptic number.

78553792446979 is a deficient number, since it is larger than the sum of its proper divisors (1).

78553792446979 is an equidigital number, since it uses as much as digits as its factorization.

78553792446979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28805414400, while the sum is 85.

The spelling of 78553792446979 in words is "seventy-eight trillion, five hundred fifty-three billion, seven hundred ninety-two million, four hundred forty-six thousand, nine hundred seventy-nine".