768478874867 has 4 divisors (see below), whose sum is σ = 838340590776. Its totient is φ = 698617158960.

The previous prime is 768478874837. The next prime is 768478874879.

It is a happy number.

768478874867 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 768478874867 - 2³⁴ = 751299005683 is a prime.

It is a super-2 number, since 2×768478874867² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 768478874791 and 768478874800.

It is not an unprimeable number, because it can be changed into a prime (768478874837) 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, 34930857938 + ... + 34930857959.

It is an arithmetic number, because the mean of its divisors is an integer number (209585147694).

Almost surely, 2^768478874867 is an apocalyptic number.

768478874867 is a deficient number, since it is larger than the sum of its proper divisors (69861715909).

768478874867 is a wasteful number, since it uses less digits than its factorization.

768478874867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69861715908.

The product of its digits is 5664669696, while the sum is 80.

The spelling of 768478874867 in words is "seven hundred sixty-eight billion, four hundred seventy-eight million, eight hundred seventy-four thousand, eight hundred sixty-seven".