7919081791429 has 2 divisors, whose sum is σ = 7919081791430. Its totient is φ = 7919081791428.

The previous prime is 7919081791399. The next prime is 7919081791483. The reversal of 7919081791429 is 9241971809197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5698117507329 + 2220964284100 = 2387073^2 + 1490290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7919081791429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7919081791499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3959540895714 + 3959540895715.

It is an arithmetic number, because the mean of its divisors is an integer number (3959540895715).

Almost surely, 2^{7919081791429} is an apocalyptic number.

It is an amenable number.

7919081791429 is a deficient number, since it is larger than the sum of its proper divisors (1).

7919081791429 is an equidigital number, since it uses as much as digits as its factorization.

7919081791429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20575296, while the sum is 67.

The spelling of 7919081791429 in words is "seven trillion, nine hundred nineteen billion, eighty-one million, seven hundred ninety-one thousand, four hundred twenty-nine".