86412186638 has 4 divisors (see below), whose sum is σ = 129618279960. Its totient is φ = 43206093318.

The previous prime is 86412186629. The next prime is 86412186667. The reversal of 86412186638 is 83668121468.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86412186638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21603046658 + ... + 21603046661.

It is an arithmetic number, because the mean of its divisors is an integer number (32404569990).

Almost surely, 2^86412186638 is an apocalyptic number.

86412186638 is a deficient number, since it is larger than the sum of its proper divisors (43206093322).

86412186638 is a wasteful number, since it uses less digits than its factorization.

86412186638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43206093321.

The product of its digits is 2654208, while the sum is 53.

The spelling of 86412186638 in words is "eighty-six billion, four hundred twelve million, one hundred eighty-six thousand, six hundred thirty-eight".