81833296894 has 32 divisors (see below), whose sum is σ = 130734410400. Its totient is φ = 38306442240.

The previous prime is 81833296879. The next prime is 81833296903. The reversal of 81833296894 is 49869233818.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7302904 + ... + 7314100.

It is an arithmetic number, because the mean of its divisors is an integer number (4085450325).

Almost surely, 2^81833296894 is an apocalyptic number.

81833296894 is a deficient number, since it is larger than the sum of its proper divisors (48901113506).

81833296894 is a wasteful number, since it uses less digits than its factorization.

81833296894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13468.

The product of its digits is 17915904, while the sum is 61.

The spelling of 81833296894 in words is "eighty-one billion, eight hundred thirty-three million, two hundred ninety-six thousand, eight hundred ninety-four".