76687855878667 has 4 divisors (see below), whose sum is σ = 83659479140376. Its totient is φ = 69716232616960.

The previous prime is 76687855878653. The next prime is 76687855878731.

76687855878667 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 76687855878667 - 2⁴³ = 67891762856459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76687855879667) 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, 3485811630838 + ... + 3485811630859.

It is an arithmetic number, because the mean of its divisors is an integer number (20914869785094).

Almost surely, 2^{76687855878667} is an apocalyptic number.

76687855878667 is a deficient number, since it is larger than the sum of its proper divisors (6971623261709).

76687855878667 is a wasteful number, since it uses less digits than its factorization.

76687855878667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971623261708.

The product of its digits is 318637670400, while the sum is 94.

The spelling of 76687855878667 in words is "seventy-six trillion, six hundred eighty-seven billion, eight hundred fifty-five million, eight hundred seventy-eight thousand, six hundred sixty-seven".