91000100010 has 32 divisors (see below), whose sum is σ = 218418347520. Its totient is φ = 24264681408.

The previous prime is 91000099987. The next prime is 91000100033. The reversal of 91000100010 is 1000100019.

It is an interprime number because it is at equal distance from previous prime (91000099987) and next prime (91000100033).

91000100010 is a modest number, since divided by 100010 gives 910 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261696 + ... + 500484.

It is an arithmetic number, because the mean of its divisors is an integer number (6825573360).

Almost surely, 2^91000100010 is an apocalyptic number.

91000100010 is an abundant number, since it is smaller than the sum of its proper divisors (127418247510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91000100010 is a wasteful number, since it uses less digits than its factorization.

91000100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251502.

The product of its (nonzero) digits is 9, while the sum is 12.

Adding to 91000100010 its reverse (1000100019), we get a palindrome (92000200029).

The spelling of 91000100010 in words is "ninety-one billion, one hundred thousand, ten".