1779849640759 has 2 divisors, whose sum is σ = 1779849640760. Its totient is φ = 1779849640758.

The previous prime is 1779849640693. The next prime is 1779849640787. The reversal of 1779849640759 is 9570469489771.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1779849640759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1779849640799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 889924820379 + 889924820380.

It is an arithmetic number, because the mean of its divisors is an integer number (889924820380).

Almost surely, 2^{1779849640759} is an apocalyptic number.

1779849640759 is a deficient number, since it is larger than the sum of its proper divisors (1).

1779849640759 is an equidigital number, since it uses as much as digits as its factorization.

1779849640759 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960180480, while the sum is 76.

The spelling of 1779849640759 in words is "one trillion, seven hundred seventy-nine billion, eight hundred forty-nine million, six hundred forty thousand, seven hundred fifty-nine".