20091175011 has 8 divisors (see below), whose sum is σ = 29764703760. Its totient is φ = 13394116656.

The previous prime is 20091174949. The next prime is 20091175043. The reversal of 20091175011 is 11057119002.

It is not a de Polignac number, because 20091175011 - 2⁶ = 20091174947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 744117593 = 20091175011 / (2 + 0 + 0 + 9 + 1 + 1 + 7 + 5 + 0 + 1 + 1).

It is not an unprimeable number, because it can be changed into a prime (20091171011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372058770 + ... + 372058823.

It is an arithmetic number, because the mean of its divisors is an integer number (3720587970).

Almost surely, 2^20091175011 is an apocalyptic number.

20091175011 is a deficient number, since it is larger than the sum of its proper divisors (9673528749).

20091175011 is an equidigital number, since it uses as much as digits as its factorization.

20091175011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744117602 (or 744117596 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 27.

The spelling of 20091175011 in words is "twenty billion, ninety-one million, one hundred seventy-five thousand, eleven".