91010010010 has 8 divisors (see below), whose sum is σ = 163818018036. Its totient is φ = 36404004000.

The previous prime is 91010009971. The next prime is 91010010079. The reversal of 91010010010 is 1001001019.

It can be written as a sum of positive squares in 2 ways, for example, as 83409483249 + 7600526761 = 288807^2 + 87181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4550500491 + ... + 4550500510.

Almost surely, 2^91010010010 is an apocalyptic number.

91010010010 is a deficient number, since it is larger than the sum of its proper divisors (72808008026).

91010010010 is a wasteful number, since it uses less digits than its factorization.

91010010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101001008.

The product of its (nonzero) digits is 9, while the sum is 13.

Adding to 91010010010 its reverse (1001001019), we get a palindrome (92011011029).

The spelling of 91010010010 in words is "ninety-one billion, ten million, ten thousand, ten".