1677894516779 has 16 divisors (see below), whose sum is σ = 1814295436128. Its totient is φ = 1542546035712.

The previous prime is 1677894516709. The next prime is 1677894516811. The reversal of 1677894516779 is 9776154987761.

It is a cyclic number.

It is not a de Polignac number, because 1677894516779 - 2⁴⁰ = 578382889003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1677894516709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8060699 + ... + 8266235.

It is an arithmetic number, because the mean of its divisors is an integer number (113393464758).

Almost surely, 2^{1677894516779} is an apocalyptic number.

1677894516779 is a deficient number, since it is larger than the sum of its proper divisors (136400919349).

1677894516779 is a wasteful number, since it uses less digits than its factorization.

1677894516779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208094.

The product of its digits is 1120210560, while the sum is 77.

The spelling of 1677894516779 in words is "one trillion, six hundred seventy-seven billion, eight hundred ninety-four million, five hundred sixteen thousand, seven hundred seventy-nine".