86666845681801 has 16 divisors (see below), whose sum is σ = 108054994578048. Its totient is φ = 67530842438400.

The previous prime is 86666845681789. The next prime is 86666845681807. The reversal of 86666845681801 is 10818654866668.

It is not a de Polignac number, because 86666845681801 - 2⁹ = 86666845681289 is a prime.

It is a super-2 number, since 2×86666845681801² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86666845681807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11735010 + ... + 17636443.

It is an arithmetic number, because the mean of its divisors is an integer number (6753437161128).

Almost surely, 2^{86666845681801} is an apocalyptic number.

It is an amenable number.

86666845681801 is a deficient number, since it is larger than the sum of its proper divisors (21388148896247).

86666845681801 is a wasteful number, since it uses less digits than its factorization.

86666845681801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29409792.

The product of its (nonzero) digits is 637009920, while the sum is 73.

The spelling of 86666845681801 in words is "eighty-six trillion, six hundred sixty-six billion, eight hundred forty-five million, six hundred eighty-one thousand, eight hundred one".