8138416768 has 16 divisors (see below), whose sum is σ = 16213252410. Its totient is φ = 4069208320.

The previous prime is 8138416757. The next prime is 8138416771. The reversal of 8138416768 is 8676148318.

It can be written as a sum of positive squares in only one way, i.e., 7411143744 + 727273024 = 86088^2 + 26968^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31790563 + ... + 31790818.

Almost surely, 2^8138416768 is an apocalyptic number.

It is an amenable number.

8138416768 is a deficient number, since it is larger than the sum of its proper divisors (8074835642).

8138416768 is an equidigital number, since it uses as much as digits as its factorization.

8138416768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63581395 (or 63581383 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The square root of 8138416768 is about 90213.1740268571. The cubic root of 8138416768 is about 2011.4688378340.

The spelling of 8138416768 in words is "eight billion, one hundred thirty-eight million, four hundred sixteen thousand, seven hundred sixty-eight".