100243275091 has 4 divisors (see below), whose sum is σ = 100768109184. Its totient is φ = 99718441000.

The previous prime is 100243275079. The next prime is 100243275101. The reversal of 100243275091 is 190572342001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190572342001 = 29 ⋅6571460069.

It is a cyclic number.

It is not a de Polignac number, because 100243275091 - 2¹⁷ = 100243144019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100243275001) 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, 262416760 + ... + 262417141.

It is an arithmetic number, because the mean of its divisors is an integer number (25192027296).

Almost surely, 2^100243275091 is an apocalyptic number.

100243275091 is a deficient number, since it is larger than the sum of its proper divisors (524834093).

100243275091 is an equidigital number, since it uses as much as digits as its factorization.

100243275091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524834092.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 100243275091 in words is "one hundred billion, two hundred forty-three million, two hundred seventy-five thousand, ninety-one".