1768172940779 has 16 divisors (see below), whose sum is σ = 2139758682048. Its totient is φ = 1426344671232.

The previous prime is 1768172940757. The next prime is 1768172940823. The reversal of 1768172940779 is 9770492718671.

It is a cyclic number.

It is not a de Polignac number, because 1768172940779 - 2¹² = 1768172936683 is a prime.

It is a super-4 number, since 4×1768172940779⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1768172940719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1743017 + ... + 2564069.

It is an arithmetic number, because the mean of its divisors is an integer number (133734917628).

Almost surely, 2^{1768172940779} is an apocalyptic number.

1768172940779 is a deficient number, since it is larger than the sum of its proper divisors (371585741269).

1768172940779 is a wasteful number, since it uses less digits than its factorization.

1768172940779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839174.

The product of its (nonzero) digits is 74680704, while the sum is 68.

The spelling of 1768172940779 in words is "one trillion, seven hundred sixty-eight billion, one hundred seventy-two million, nine hundred forty thousand, seven hundred seventy-nine".