38308685777 has 2 divisors, whose sum is σ = 38308685778. Its totient is φ = 38308685776.

The previous prime is 38308685731. The next prime is 38308685791. The reversal of 38308685777 is 77758680383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38240193601 + 68492176 = 195551^2 + 8276^2 .

It is a cyclic number.

It is not a de Polignac number, because 38308685777 - 2³⁴ = 21128816593 is a prime.

It is not a weakly prime, because it can be changed into another prime (38308685707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19154342888 + 19154342889.

It is an arithmetic number, because the mean of its divisors is an integer number (19154342889).

Almost surely, 2^38308685777 is an apocalyptic number.

It is an amenable number.

38308685777 is a deficient number, since it is larger than the sum of its proper divisors (1).

38308685777 is an equidigital number, since it uses as much as digits as its factorization.

38308685777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47416320, while the sum is 62.

The spelling of 38308685777 in words is "thirty-eight billion, three hundred eight million, six hundred eighty-five thousand, seven hundred seventy-seven".