20236446011 has 4 divisors (see below), whose sum is σ = 20889234624. Its totient is φ = 19583657400.

The previous prime is 20236445993. The next prime is 20236446047. The reversal of 20236446011 is 11064463202.

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-20236446011 is a prime.

It is a super-2 number, since 2×20236446011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20236446311) 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, 326394260 + ... + 326394321.

It is an arithmetic number, because the mean of its divisors is an integer number (5222308656).

Almost surely, 2^20236446011 is an apocalyptic number.

20236446011 is a deficient number, since it is larger than the sum of its proper divisors (652788613).

20236446011 is an equidigital number, since it uses as much as digits as its factorization.

20236446011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652788612.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 20236446011 in words is "twenty billion, two hundred thirty-six million, four hundred forty-six thousand, eleven".