86921917195 has 16 divisors (see below), whose sum is σ = 105859219680. Its totient is φ = 68507898624.

The previous prime is 86921917177. The next prime is 86921917223. The reversal of 86921917195 is 59171912968.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86921917195 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229317 + ... + 475846.

It is an arithmetic number, because the mean of its divisors is an integer number (6616201230).

Almost surely, 2^86921917195 is an apocalyptic number.

86921917195 is a deficient number, since it is larger than the sum of its proper divisors (18937302485).

86921917195 is a wasteful number, since it uses less digits than its factorization.

86921917195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705534.

The product of its digits is 2449440, while the sum is 58.

The spelling of 86921917195 in words is "eighty-six billion, nine hundred twenty-one million, nine hundred seventeen thousand, one hundred ninety-five".