1742747579879 has 2 divisors, whose sum is σ = 1742747579880. Its totient is φ = 1742747579878.

The previous prime is 1742747579869. The next prime is 1742747579893. The reversal of 1742747579879 is 9789757472471.

It is a weak prime.

It is an emirp because it is prime and its reverse (9789757472471) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1742747579879 - 2²⁴ = 1742730802663 is a prime.

It is a super-2 number, since 2×1742747579879² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1742747579869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 871373789939 + 871373789940.

It is an arithmetic number, because the mean of its divisors is an integer number (871373789940).

Almost surely, 2^{1742747579879} is an apocalyptic number.

1742747579879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1742747579879 is an equidigital number, since it uses as much as digits as its factorization.

1742747579879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1742549760, while the sum is 77.

The spelling of 1742747579879 in words is "one trillion, seven hundred forty-two billion, seven hundred forty-seven million, five hundred seventy-nine thousand, eight hundred seventy-nine".