38786668785 has 12 divisors (see below), whose sum is σ = 67230225972. Its totient is φ = 20686223328.

The previous prime is 38786668747. The next prime is 38786668793. The reversal of 38786668785 is 58786668783.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29336495841 + 9450172944 = 171279^2 + 97212^2 .

It is not a de Polignac number, because 38786668785 - 2²¹ = 38784571633 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430962942 + ... + 430963031.

It is an arithmetic number, because the mean of its divisors is an integer number (5602518831).

Almost surely, 2^38786668785 is an apocalyptic number.

It is an amenable number.

38786668785 is a deficient number, since it is larger than the sum of its proper divisors (28443557187).

38786668785 is a wasteful number, since it uses less digits than its factorization.

38786668785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861925984 (or 861925981 counting only the distinct ones).

The product of its digits is 650280960, while the sum is 72.

The spelling of 38786668785 in words is "thirty-eight billion, seven hundred eighty-six million, six hundred sixty-eight thousand, seven hundred eighty-five".