86666845681802 has 16 divisors (see below), whose sum is σ = 130605191979552. Its totient is φ = 43131875943600.

The previous prime is 86666845681789. The next prime is 86666845681807. The reversal of 86666845681802 is 20818654866668.

It is a super-2 number, since 2×86666845681802² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86666845681802.

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 7 ways as a sum of consecutive naturals, for example, 21722453 + ... + 25400760.

It is an arithmetic number, because the mean of its divisors is an integer number (8162824498722).

Almost surely, 2^{86666845681802} is an apocalyptic number.

86666845681802 is a deficient number, since it is larger than the sum of its proper divisors (43938346297750).

86666845681802 is a wasteful number, since it uses less digits than its factorization.

86666845681802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47127493.

The product of its (nonzero) digits is 1274019840, while the sum is 74.

The spelling of 86666845681802 in words is "eighty-six trillion, six hundred sixty-six billion, eight hundred forty-five million, six hundred eighty-one thousand, eight hundred two".