56773138771 has 2 divisors, whose sum is σ = 56773138772. Its totient is φ = 56773138770.

The previous prime is 56773138757. The next prime is 56773138777. The reversal of 56773138771 is 17783137765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56773138771 - 2⁵ = 56773138739 is a prime.

It is a super-2 number, since 2×56773138771² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56773138777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28386569385 + 28386569386.

It is an arithmetic number, because the mean of its divisors is an integer number (28386569386).

Almost surely, 2^56773138771 is an apocalyptic number.

56773138771 is a deficient number, since it is larger than the sum of its proper divisors (1).

56773138771 is an equidigital number, since it uses as much as digits as its factorization.

56773138771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5186160, while the sum is 55.

The spelling of 56773138771 in words is "fifty-six billion, seven hundred seventy-three million, one hundred thirty-eight thousand, seven hundred seventy-one".