34478428877 has 2 divisors, whose sum is σ = 34478428878. Its totient is φ = 34478428876.

The previous prime is 34478428847. The next prime is 34478428879. The reversal of 34478428877 is 77882487443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33189188041 + 1289240836 = 182179^2 + 35906^2 .

It is a cyclic number.

It is not a de Polignac number, because 34478428877 - 2⁶ = 34478428813 is a prime.

It is a super-2 number, since 2×34478428877² (a number of 22 digits) contains 22 as substring.

Together with 34478428879, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34478428879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17239214438 + 17239214439.

It is an arithmetic number, because the mean of its divisors is an integer number (17239214439).

Almost surely, 2^34478428877 is an apocalyptic number.

It is an amenable number.

34478428877 is a deficient number, since it is larger than the sum of its proper divisors (1).

34478428877 is an equidigital number, since it uses as much as digits as its factorization.

34478428877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67436544, while the sum is 62.

The spelling of 34478428877 in words is "thirty-four billion, four hundred seventy-eight million, four hundred twenty-eight thousand, eight hundred seventy-seven".