8212686801566 has 16 divisors (see below), whose sum is σ = 13266844491600. Its totient is φ = 3790414665408.

The previous prime is 8212686801563. The next prime is 8212686801569. The reversal of 8212686801566 is 6651086862128.

It is an interprime number because it is at equal distance from previous prime (8212686801563) and next prime (8212686801569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212686801563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525296 + ... + 4086723.

It is an arithmetic number, because the mean of its divisors is an integer number (829177780725).

Almost surely, 2^{8212686801566} is an apocalyptic number.

8212686801566 is a deficient number, since it is larger than the sum of its proper divisors (5054157690034).

8212686801566 is a wasteful number, since it uses less digits than its factorization.

8212686801566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680523.

The product of its (nonzero) digits is 13271040, while the sum is 59.

The spelling of 8212686801566 in words is "eight trillion, two hundred twelve billion, six hundred eighty-six million, eight hundred one thousand, five hundred sixty-six".