86463853666 has 4 divisors (see below), whose sum is σ = 129695780502. Its totient is φ = 43231926832.

The previous prime is 86463853661. The next prime is 86463853757. The reversal of 86463853666 is 66635836468.

It is a happy number.

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., 73037765025 + 13426088641 = 270255^2 + 115871^2 .

It is not an unprimeable number, because it can be changed into a prime (86463853661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21615963415 + ... + 21615963418.

Almost surely, 2^86463853666 is an apocalyptic number.

86463853666 is a deficient number, since it is larger than the sum of its proper divisors (43231926836).

86463853666 is a wasteful number, since it uses less digits than its factorization.

86463853666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43231926835.

The product of its digits is 89579520, while the sum is 61.

The spelling of 86463853666 in words is "eighty-six billion, four hundred sixty-three million, eight hundred fifty-three thousand, six hundred sixty-six".