5677777783921 has 2 divisors, whose sum is σ = 5677777783922. Its totient is φ = 5677777783920.

The previous prime is 5677777783889. The next prime is 5677777783943. The reversal of 5677777783921 is 1293877777765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3016001848896 + 2661775935025 = 1736664^2 + 1631495^2 .

It is a cyclic number.

It is not a de Polignac number, because 5677777783921 - 2⁵ = 5677777783889 is a prime.

It is a super-2 number, since 2×5677777783921² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5677777783121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2838888891960 + 2838888891961.

It is an arithmetic number, because the mean of its divisors is an integer number (2838888891961).

Almost surely, 2^{5677777783921} is an apocalyptic number.

It is an amenable number.

5677777783921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5677777783921 is an equidigital number, since it uses as much as digits as its factorization.

5677777783921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524731040, while the sum is 76.

The spelling of 5677777783921 in words is "five trillion, six hundred seventy-seven billion, seven hundred seventy-seven million, seven hundred eighty-three thousand, nine hundred twenty-one".