20656042311 has 8 divisors (see below), whose sum is σ = 28181887360. Its totient is φ = 13450446072.

The previous prime is 20656042301. The next prime is 20656042369. The reversal of 20656042311 is 11324065602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20656042311 - 2¹¹ = 20656040263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20656042301) 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 7 ways as a sum of consecutive naturals, for example, 80062051 + ... + 80062308.

It is an arithmetic number, because the mean of its divisors is an integer number (3522735920).

Almost surely, 2^20656042311 is an apocalyptic number.

20656042311 is a deficient number, since it is larger than the sum of its proper divisors (7525845049).

20656042311 is a wasteful number, since it uses less digits than its factorization.

20656042311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160124405.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 20656042311 in words is "twenty billion, six hundred fifty-six million, forty-two thousand, three hundred eleven".