81333825014 has 16 divisors (see below), whose sum is σ = 131543931120. Its totient is φ = 37493396640.

The previous prime is 81333825011. The next prime is 81333825043. The reversal of 81333825014 is 41052833318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81333825011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1865192 + ... + 1908299.

It is an arithmetic number, because the mean of its divisors is an integer number (8221495695).

Almost surely, 2^81333825014 is an apocalyptic number.

81333825014 is a deficient number, since it is larger than the sum of its proper divisors (50210106106).

81333825014 is a wasteful number, since it uses less digits than its factorization.

81333825014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774335.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 81333825014 in words is "eighty-one billion, three hundred thirty-three million, eight hundred twenty-five thousand, fourteen".