6866780312315 has 24 divisors (see below), whose sum is σ = 10351245700320. Its totient is φ = 4280590321920.

The previous prime is 6866780312303. The next prime is 6866780312317. The reversal of 6866780312315 is 5132130876686.

It is not a de Polignac number, because 6866780312315 - 2¹⁰ = 6866780311291 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6866780312317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 810713630 + ... + 810722099.

It is an arithmetic number, because the mean of its divisors is an integer number (431301904180).

Almost surely, 2^{6866780312315} is an apocalyptic number.

6866780312315 is a deficient number, since it is larger than the sum of its proper divisors (3484465388005).

6866780312315 is a wasteful number, since it uses less digits than its factorization.

6866780312315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621435763 (or 1621435752 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 6866780312315 in words is "six trillion, eight hundred sixty-six billion, seven hundred eighty million, three hundred twelve thousand, three hundred fifteen".