20110009291 has 4 divisors (see below), whose sum is σ = 21292951032. Its totient is φ = 18927067552.

The previous prime is 20110009273. The next prime is 20110009307. The reversal of 20110009291 is 19290001102.

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 20110009291 - 2¹⁹ = 20109485003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110009211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591470845 + ... + 591470878.

It is an arithmetic number, because the mean of its divisors is an integer number (5323237758).

Almost surely, 2^20110009291 is an apocalyptic number.

20110009291 is a deficient number, since it is larger than the sum of its proper divisors (1182941741).

20110009291 is a wasteful number, since it uses less digits than its factorization.

20110009291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182941740.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 20110009291 in words is "twenty billion, one hundred ten million, nine thousand, two hundred ninety-one".