20371935011 has 4 divisors (see below), whose sum is σ = 20389333224. Its totient is φ = 20354536800.

The previous prime is 20371934971. The next prime is 20371935097. The reversal of 20371935011 is 11053917302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20371935011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20371995011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8697350 + ... + 8699691.

It is an arithmetic number, because the mean of its divisors is an integer number (5097333306).

Almost surely, 2^20371935011 is an apocalyptic number.

20371935011 is a deficient number, since it is larger than the sum of its proper divisors (17398213).

20371935011 is a wasteful number, since it uses less digits than its factorization.

20371935011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17398212.

The product of its (nonzero) digits is 5670, while the sum is 32.

The spelling of 20371935011 in words is "twenty billion, three hundred seventy-one million, nine hundred thirty-five thousand, eleven".