91820000211 has 32 divisors (see below), whose sum is σ = 130295236608. Its totient is φ = 57316492800.

The previous prime is 91820000203. The next prime is 91820000227. The reversal of 91820000211 is 11200002819.

It is not a de Polignac number, because 91820000211 - 2³ = 91820000203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91820000231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24807661 + ... + 24811361.

It is an arithmetic number, because the mean of its divisors is an integer number (4071726144).

Almost surely, 2^91820000211 is an apocalyptic number.

91820000211 is a deficient number, since it is larger than the sum of its proper divisors (38475236397).

91820000211 is a wasteful number, since it uses less digits than its factorization.

91820000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 91820000211 in words is "ninety-one billion, eight hundred twenty million, two hundred eleven", and thus it is an aban number.