81083903846 has 8 divisors (see below), whose sum is σ = 132682751784. Its totient is φ = 36856319920.

The previous prime is 81083903843. The next prime is 81083903863. The reversal of 81083903846 is 64830938018.

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

It is a junction number, because it is equal to n+sod(n) for n = 81083903794 and 81083903803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81083903843) 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, 1842815975 + ... + 1842816018.

It is an arithmetic number, because the mean of its divisors is an integer number (16585343973).

Almost surely, 2^81083903846 is an apocalyptic number.

81083903846 is a deficient number, since it is larger than the sum of its proper divisors (51598847938).

81083903846 is a wasteful number, since it uses less digits than its factorization.

81083903846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685632006.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 81083903846 in words is "eighty-one billion, eighty-three million, nine hundred three thousand, eight hundred forty-six".