86819999999999 has 4 divisors (see below), whose sum is σ = 99222857142864. Its totient is φ = 74417142857136.

The previous prime is 86819999999987. The next prime is 86820000000073. The reversal of 86819999999999 is 99999999991868.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86819999999999 is a prime.

It is a super-9 number, since 9×86819999999999⁹ (a number of 127 digits) contains 999999999 as substring.

86819999999999 is a modest number, since divided by 9999999 gives 8681999 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 86819999999893 and 86819999999902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86819999939999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6201428571422 + ... + 6201428571435.

It is an arithmetic number, because the mean of its divisors is an integer number (24805714285716).

Almost surely, 2^{86819999999999} is an apocalyptic number.

86819999999999 is a deficient number, since it is larger than the sum of its proper divisors (12402857142865).

86819999999999 is a wasteful number, since it uses less digits than its factorization.

86819999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12402857142864.

The product of its digits is 1338925209984, while the sum is 113.

The spelling of 86819999999999 in words is "eighty-six trillion, eight hundred nineteen billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".