6890316876778 has 8 divisors (see below), whose sum is σ = 10691871015780. Its totient is φ = 3326359871520.

The previous prime is 6890316876721. The next prime is 6890316876799. The reversal of 6890316876778 is 8776786130986.

It can be written as a sum of positive squares in 2 ways, for example, as 5920885624369 + 969431252409 = 2433287^2 + 984597^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6890316876778² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59399283363 + ... + 59399283478.

Almost surely, 2^{6890316876778} is an apocalyptic number.

6890316876778 is a deficient number, since it is larger than the sum of its proper divisors (3801554139002).

6890316876778 is a wasteful number, since it uses less digits than its factorization.

6890316876778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118798566872.

The product of its (nonzero) digits is 1024192512, while the sum is 76.

The spelling of 6890316876778 in words is "six trillion, eight hundred ninety billion, three hundred sixteen million, eight hundred seventy-six thousand, seven hundred seventy-eight".