6851686013762 has 4 divisors (see below), whose sum is σ = 10277529020646. Its totient is φ = 3425843006880.

The previous prime is 6851686013761. The next prime is 6851686013803. The reversal of 6851686013762 is 2673106861586.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6250005000001 + 601681013761 = 2500001^2 + 775681^2 .

It is not an unprimeable number, because it can be changed into a prime (6851686013761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1712921503439 + ... + 1712921503442.

Almost surely, 2^{6851686013762} is an apocalyptic number.

6851686013762 is a deficient number, since it is larger than the sum of its proper divisors (3425843006884).

6851686013762 is a wasteful number, since it uses less digits than its factorization.

6851686013762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425843006883.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 6851686013762 in words is "six trillion, eight hundred fifty-one billion, six hundred eighty-six million, thirteen thousand, seven hundred sixty-two".