20944255156 has 24 divisors (see below), whose sum is σ = 39993436224. Its totient is φ = 9517985280.

The previous prime is 20944255151. The next prime is 20944255181. The reversal of 20944255156 is 65155244902.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20944255151) 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 7 ways as a sum of consecutive naturals, for example, 154681 + ... + 256543.

It is an arithmetic number, because the mean of its divisors is an integer number (1666393176).

Almost surely, 2^20944255156 is an apocalyptic number.

It is an amenable number.

20944255156 is a deficient number, since it is larger than the sum of its proper divisors (19049181068).

20944255156 is a wasteful number, since it uses less digits than its factorization.

20944255156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106551 (or 106549 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 20944255156 in words is "twenty billion, nine hundred forty-four million, two hundred fifty-five thousand, one hundred fifty-six".