34123781977 has 2 divisors, whose sum is σ = 34123781978. Its totient is φ = 34123781976.

The previous prime is 34123781963. The next prime is 34123781983. The reversal of 34123781977 is 77918732143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23420017296 + 10703764681 = 153036^2 + 103459^2 .

It is a cyclic number.

It is not a de Polignac number, because 34123781977 - 2⁷ = 34123781849 is a prime.

It is not a weakly prime, because it can be changed into another prime (34123781917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17061890988 + 17061890989.

It is an arithmetic number, because the mean of its divisors is an integer number (17061890989).

Almost surely, 2^34123781977 is an apocalyptic number.

It is an amenable number.

34123781977 is a deficient number, since it is larger than the sum of its proper divisors (1).

34123781977 is an equidigital number, since it uses as much as digits as its factorization.

34123781977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 52.

The spelling of 34123781977 in words is "thirty-four billion, one hundred twenty-three million, seven hundred eighty-one thousand, nine hundred seventy-seven".