7686894986867 has 4 divisors (see below), whose sum is σ = 7737801576336. Its totient is φ = 7635988397400.

The previous prime is 7686894986819. The next prime is 7686894986923.

7686894986867 is nontrivially palindromic in base 10.

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 7686894986867 - 2²⁸ = 7686626551411 is a prime.

It is a super-2 number, since 2×7686894986867² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7686894986167) 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, 25453294508 + ... + 25453294809.

It is an arithmetic number, because the mean of its divisors is an integer number (1934450394084).

Almost surely, 2^{7686894986867} is an apocalyptic number.

7686894986867 is a deficient number, since it is larger than the sum of its proper divisors (50906589469).

7686894986867 is a wasteful number, since it uses less digits than its factorization.

7686894986867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50906589468.

The product of its digits is 84276412416, while the sum is 92.

The spelling of 7686894986867 in words is "seven trillion, six hundred eighty-six billion, eight hundred ninety-four million, nine hundred eighty-six thousand, eight hundred sixty-seven".