81096687003 has 4 divisors (see below), whose sum is σ = 108128916008. Its totient is φ = 54064458000.

The previous prime is 81096686959. The next prime is 81096687013. The reversal of 81096687003 is 30078669018.

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

It is not a de Polignac number, because 81096687003 - 2²⁹ = 80559816091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81096687013) 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, 13516114498 + ... + 13516114503.

It is an arithmetic number, because the mean of its divisors is an integer number (27032229002).

Almost surely, 2^81096687003 is an apocalyptic number.

81096687003 is a deficient number, since it is larger than the sum of its proper divisors (27032229005).

81096687003 is a wasteful number, since it uses less digits than its factorization.

81096687003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27032229004.

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 81096687003 in words is "eighty-one billion, ninety-six million, six hundred eighty-seven thousand, three".