20944582344 has 96 divisors (see below), whose sum is σ = 67678106400. Its totient is φ = 5984163360.

The previous prime is 20944582343. The next prime is 20944582357. The reversal of 20944582344 is 44328544902.

20944582344 is a `hidden beast` number, since 20 + 9 + 4 + 4 + 582 + 3 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20944582344.

It is not an unprimeable number, because it can be changed into a prime (20944582343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 978862 + ... + 1000029.

It is an arithmetic number, because the mean of its divisors is an integer number (704980275).

Almost surely, 2^20944582344 is an apocalyptic number.

20944582344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20944582344 is an abundant number, since it is smaller than the sum of its proper divisors (46733524056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20944582344 is a wasteful number, since it uses less digits than its factorization.

20944582344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978920 (or 1978903 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 20944582344 in words is "twenty billion, nine hundred forty-four million, five hundred eighty-two thousand, three hundred forty-four".