71199594779 has 2 divisors, whose sum is σ = 71199594780. Its totient is φ = 71199594778.

The previous prime is 71199594761. The next prime is 71199594799. The reversal of 71199594779 is 97749599117.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71199594779 - 2⁸ = 71199594523 is a prime.

It is not a weakly prime, because it can be changed into another prime (71199594709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35599797389 + 35599797390.

It is an arithmetic number, because the mean of its divisors is an integer number (35599797390).

Almost surely, 2^71199594779 is an apocalyptic number.

71199594779 is a deficient number, since it is larger than the sum of its proper divisors (1).

71199594779 is an equidigital number, since it uses as much as digits as its factorization.

71199594779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45008460, while the sum is 68.

The spelling of 71199594779 in words is "seventy-one billion, one hundred ninety-nine million, five hundred ninety-four thousand, seven hundred seventy-nine".