68416012771 has 4 divisors (see below), whose sum is σ = 68500582200. Its totient is φ = 68331443344.

The previous prime is 68416012759. The next prime is 68416012909. The reversal of 68416012771 is 17721061486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68416012771 - 2⁵ = 68416012739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68416112771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42283501 + ... + 42285118.

It is an arithmetic number, because the mean of its divisors is an integer number (17125145550).

Almost surely, 2^68416012771 is an apocalyptic number.

68416012771 is a deficient number, since it is larger than the sum of its proper divisors (84569429).

68416012771 is an equidigital number, since it uses as much as digits as its factorization.

68416012771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84569428.

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 68416012771 in words is "sixty-eight billion, four hundred sixteen million, twelve thousand, seven hundred seventy-one".