86431343855 has 8 divisors (see below), whose sum is σ = 104882979600. Its totient is φ = 68368163776.

The previous prime is 86431343851. The next prime is 86431343863. The reversal of 86431343855 is 55834313468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86431343855 - 2² = 86431343851 is a prime.

It is a super-2 number, since 2×86431343855² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86431343851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97113425 + ... + 97114314.

It is an arithmetic number, because the mean of its divisors is an integer number (13110372450).

Almost surely, 2^86431343855 is an apocalyptic number.

86431343855 is a deficient number, since it is larger than the sum of its proper divisors (18451635745).

86431343855 is a wasteful number, since it uses less digits than its factorization.

86431343855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194227833.

The product of its digits is 4147200, while the sum is 50.

The spelling of 86431343855 in words is "eighty-six billion, four hundred thirty-one million, three hundred forty-three thousand, eight hundred fifty-five".