9100500010091 has 4 divisors (see below), whose sum is σ = 10400571440112. Its totient is φ = 7800428580072.

The previous prime is 9100500010087. The next prime is 9100500010093. The reversal of 9100500010091 is 1900100050019.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9100500010091 - 2² = 9100500010087 is a prime.

It is a super-2 number, since 2×9100500010091² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9100500010091.

It is not an unprimeable number, because it can be changed into a prime (9100500010093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650035715000 + ... + 650035715013.

It is an arithmetic number, because the mean of its divisors is an integer number (2600142860028).

Almost surely, 2^{9100500010091} is an apocalyptic number.

9100500010091 is a deficient number, since it is larger than the sum of its proper divisors (1300071430021).

9100500010091 is a wasteful number, since it uses less digits than its factorization.

9100500010091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300071430020.

The product of its (nonzero) digits is 405, while the sum is 26.

The spelling of 9100500010091 in words is "nine trillion, one hundred billion, five hundred million, ten thousand, ninety-one".