7771940923 has 2 divisors, whose sum is σ = 7771940924. Its totient is φ = 7771940922.

The previous prime is 7771940893. The next prime is 7771940933. The reversal of 7771940923 is 3290491777.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7771940923 - 2⁹ = 7771940411 is a prime.

It is not a weakly prime, because it can be changed into another prime (7771940933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3885970461 + 3885970462.

It is an arithmetic number, because the mean of its divisors is an integer number (3885970462).

Almost surely, 2^7771940923 is an apocalyptic number.

7771940923 is a deficient number, since it is larger than the sum of its proper divisors (1).

7771940923 is an equidigital number, since it uses as much as digits as its factorization.

7771940923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 7771940923 is about 88158.6123019186. The cubic root of 7771940923 is about 1980.8115677083.

The spelling of 7771940923 in words is "seven billion, seven hundred seventy-one million, nine hundred forty thousand, nine hundred twenty-three".