6687800666151 has 16 divisors (see below), whose sum is σ = 9727864204800. Its totient is φ = 4053148297920.

The previous prime is 6687800666089. The next prime is 6687800666177. The reversal of 6687800666151 is 1516660087866.

It is not a de Polignac number, because 6687800666151 - 2⁹ = 6687800665639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687800666951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551691 + ... + 3698643.

It is an arithmetic number, because the mean of its divisors is an integer number (607991512800).

Almost surely, 2^{6687800666151} is an apocalyptic number.

6687800666151 is a deficient number, since it is larger than the sum of its proper divisors (3040063538649).

6687800666151 is a wasteful number, since it uses less digits than its factorization.

6687800666151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211366.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 6687800666151 in words is "six trillion, six hundred eighty-seven billion, eight hundred million, six hundred sixty-six thousand, one hundred fifty-one".