81096499259 has 16 divisors (see below), whose sum is σ = 82638027264. Its totient is φ = 79572240000.

The previous prime is 81096499223. The next prime is 81096499291. The reversal of 81096499259 is 95299469018.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81096499259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81096499459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6230252 + ... + 6243254.

It is an arithmetic number, because the mean of its divisors is an integer number (5164876704).

Almost surely, 2^81096499259 is an apocalyptic number.

81096499259 is a deficient number, since it is larger than the sum of its proper divisors (1541528005).

81096499259 is a wasteful number, since it uses less digits than its factorization.

81096499259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13658.

The product of its (nonzero) digits is 12597120, while the sum is 62.

The spelling of 81096499259 in words is "eighty-one billion, ninety-six million, four hundred ninety-nine thousand, two hundred fifty-nine".