38634038777 has 2 divisors, whose sum is σ = 38634038778. Its totient is φ = 38634038776.

The previous prime is 38634038767. The next prime is 38634038783. The reversal of 38634038777 is 77783043683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20730528361 + 17903510416 = 143981^2 + 133804^2 .

It is a cyclic number.

It is not a de Polignac number, because 38634038777 - 2²⁸ = 38365603321 is a prime.

It is not a weakly prime, because it can be changed into another prime (38634038767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19317019388 + 19317019389.

It is an arithmetic number, because the mean of its divisors is an integer number (19317019389).

Almost surely, 2^38634038777 is an apocalyptic number.

It is an amenable number.

38634038777 is a deficient number, since it is larger than the sum of its proper divisors (1).

38634038777 is an equidigital number, since it uses as much as digits as its factorization.

38634038777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14224896, while the sum is 56.

The spelling of 38634038777 in words is "thirty-eight billion, six hundred thirty-four million, thirty-eight thousand, seven hundred seventy-seven".