1715691712879 has 2 divisors, whose sum is σ = 1715691712880. Its totient is φ = 1715691712878.

The previous prime is 1715691712633. The next prime is 1715691712897. The reversal of 1715691712879 is 9782171965171.

Together with next prime (1715691712897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (9782171965171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1715691712879 - 2²¹ = 1715689615727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1715691712879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1715691719879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 857845856439 + 857845856440.

It is an arithmetic number, because the mean of its divisors is an integer number (857845856440).

Almost surely, 2^{1715691712879} is an apocalyptic number.

1715691712879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1715691712879 is an equidigital number, since it uses as much as digits as its factorization.

1715691712879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13335840, while the sum is 64.

The spelling of 1715691712879 in words is "one trillion, seven hundred fifteen billion, six hundred ninety-one million, seven hundred twelve thousand, eight hundred seventy-nine".