86243729481 has 96 divisors (see below), whose sum is σ = 161376703488. Its totient is φ = 44811455040.

The previous prime is 86243729479. The next prime is 86243729497. The reversal of 86243729481 is 18492734268.

86243729481 is a `hidden beast` number, since 8 + 624 + 3 + 7 + 2 + 9 + 4 + 8 + 1 = 666.

It is not a de Polignac number, because 86243729481 - 2¹ = 86243729479 is a prime.

It is a super-2 number, since 2×86243729481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86243729431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1452466 + ... + 1510676.

It is an arithmetic number, because the mean of its divisors is an integer number (1681007328).

Almost surely, 2^86243729481 is an apocalyptic number.

86243729481 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

86243729481 is a deficient number, since it is larger than the sum of its proper divisors (75132974007).

86243729481 is a wasteful number, since it uses less digits than its factorization.

86243729481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58313 (or 58301 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 86243729481 in words is "eighty-six billion, two hundred forty-three million, seven hundred twenty-nine thousand, four hundred eighty-one".