1677854668993 has 2 divisors, whose sum is σ = 1677854668994. Its totient is φ = 1677854668992.

The previous prime is 1677854668967. The next prime is 1677854669021. The reversal of 1677854668993 is 3998664587761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1597321877904 + 80532791089 = 1263852^2 + 283783^2 .

It is an emirp because it is prime and its reverse (3998664587761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1677854668993 - 2¹⁷ = 1677854537921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1677854678993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838927334496 + 838927334497.

It is an arithmetic number, because the mean of its divisors is an integer number (838927334497).

Almost surely, 2^{1677854668993} is an apocalyptic number.

It is an amenable number.

1677854668993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1677854668993 is an equidigital number, since it uses as much as digits as its factorization.

1677854668993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3292047360, while the sum is 79.

The spelling of 1677854668993 in words is "one trillion, six hundred seventy-seven billion, eight hundred fifty-four million, six hundred sixty-eight thousand, nine hundred ninety-three".