1677821121233 has 2 divisors, whose sum is σ = 1677821121234. Its totient is φ = 1677821121232.

The previous prime is 1677821121227. The next prime is 1677821121253. The reversal of 1677821121233 is 3321211287761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1270237194304 + 407583926929 = 1127048^2 + 638423^2 .

It is a cyclic number.

It is not a de Polignac number, because 1677821121233 - 2²⁰ = 1677820072657 is a prime.

It is a super-2 number, since 2×1677821121233² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1677821121253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838910560616 + 838910560617.

It is an arithmetic number, because the mean of its divisors is an integer number (838910560617).

Almost surely, 2^{1677821121233} is an apocalyptic number.

It is an amenable number.

1677821121233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1677821121233 is an equidigital number, since it uses as much as digits as its factorization.

1677821121233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The spelling of 1677821121233 in words is "one trillion, six hundred seventy-seven billion, eight hundred twenty-one million, one hundred twenty-one thousand, two hundred thirty-three".