91820010910 has 16 divisors (see below), whose sum is σ = 166106556000. Its totient is φ = 36543440736.

The previous prime is 91820010881. The next prime is 91820010911. The reversal of 91820010910 is 1901002819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91820010911) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23068365 + ... + 23072344.

It is an arithmetic number, because the mean of its divisors is an integer number (10381659750).

Almost surely, 2^91820010910 is an apocalyptic number.

91820010910 is a deficient number, since it is larger than the sum of its proper divisors (74286545090).

91820010910 is a wasteful number, since it uses less digits than its factorization.

91820010910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46140915.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 91820010910 in words is "ninety-one billion, eight hundred twenty million, ten thousand, nine hundred ten".