86224742457866 has 4 divisors (see below), whose sum is σ = 129337113686802. Its totient is φ = 43112371228932.

The previous prime is 86224742457829. The next prime is 86224742457937. The reversal of 86224742457866 is 66875424742268.

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., 85225300380025 + 999442077841 = 9231755^2 + 999721^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 86224742457866.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21556185614465 + ... + 21556185614468.

Almost surely, 2^{86224742457866} is an apocalyptic number.

86224742457866 is a deficient number, since it is larger than the sum of its proper divisors (43112371228936).

86224742457866 is a wasteful number, since it uses less digits than its factorization.

86224742457866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43112371228935.

The product of its digits is 1734082560, while the sum is 71.

The spelling of 86224742457866 in words is "eighty-six trillion, two hundred twenty-four billion, seven hundred forty-two million, four hundred fifty-seven thousand, eight hundred sixty-six".