86224343981 has 32 divisors (see below), whose sum is σ = 92131491840. Its totient is φ = 80572579200.

The previous prime is 86224343963. The next prime is 86224343993. The reversal of 86224343981 is 18934342268.

It is a cyclic number.

It is not a de Polignac number, because 86224343981 - 2²² = 86220149677 is a prime.

It is a super-2 number, since 2×86224343981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86224343921) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 36181916 + ... + 36184298.

It is an arithmetic number, because the mean of its divisors is an integer number (2879109120).

Almost surely, 2^86224343981 is an apocalyptic number.

It is an amenable number.

86224343981 is a deficient number, since it is larger than the sum of its proper divisors (5907147859).

86224343981 is a wasteful number, since it uses less digits than its factorization.

86224343981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817.

The product of its digits is 1990656, while the sum is 50.

The spelling of 86224343981 in words is "eighty-six billion, two hundred twenty-four million, three hundred forty-three thousand, nine hundred eighty-one".