86181691039 has 16 divisors (see below), whose sum is σ = 88849332000. Its totient is φ = 83545128576.

The previous prime is 86181691003. The next prime is 86181691049. The reversal of 86181691039 is 93019618168.

It is a cyclic number.

It is not a de Polignac number, because 86181691039 - 2⁹ = 86181690527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86181691049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9150897 + ... + 9160309.

It is an arithmetic number, because the mean of its divisors is an integer number (5553083250).

Almost surely, 2^86181691039 is an apocalyptic number.

86181691039 is a deficient number, since it is larger than the sum of its proper divisors (2667640961).

86181691039 is a wasteful number, since it uses less digits than its factorization.

86181691039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11034.

The product of its (nonzero) digits is 559872, while the sum is 52.

The spelling of 86181691039 in words is "eighty-six billion, one hundred eighty-one million, six hundred ninety-one thousand, thirty-nine".