86066655870721 has 4 divisors (see below), whose sum is σ = 86068630327744. Its totient is φ = 86064681413700.

The previous prime is 86066655870659. The next prime is 86066655870733. The reversal of 86066655870721 is 12707855666068.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86066655870721 - 2⁷ = 86066655870593 is a prime.

It is a super-2 number, since 2×86066655870721² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86066655870791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 987163125 + ... + 987250306.

It is an arithmetic number, because the mean of its divisors is an integer number (21517157581936).

Almost surely, 2^{86066655870721} is an apocalyptic number.

It is an amenable number.

86066655870721 is a deficient number, since it is larger than the sum of its proper divisors (1974457023).

86066655870721 is a wasteful number, since it uses less digits than its factorization.

86066655870721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974457022.

The product of its (nonzero) digits is 203212800, while the sum is 67.

The spelling of 86066655870721 in words is "eighty-six trillion, sixty-six billion, six hundred fifty-five million, eight hundred seventy thousand, seven hundred twenty-one".