7178571792979 has 2 divisors, whose sum is σ = 7178571792980. Its totient is φ = 7178571792978.

The previous prime is 7178571792943. The next prime is 7178571793009. The reversal of 7178571792979 is 9792971758717.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7178571792979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7178571792899 and 7178571792908.

It is not a weakly prime, because it can be changed into another prime (7178571192979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3589285896489 + 3589285896490.

It is an arithmetic number, because the mean of its divisors is an integer number (3589285896490).

Almost surely, 2^{7178571792979} is an apocalyptic number.

7178571792979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7178571792979 is an equidigital number, since it uses as much as digits as its factorization.

7178571792979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 980184240, while the sum is 79.

The spelling of 7178571792979 in words is "seven trillion, one hundred seventy-eight billion, five hundred seventy-one million, seven hundred ninety-two thousand, nine hundred seventy-nine".