20952889344 has 72 divisors (see below), whose sum is σ = 60515844480. Its totient is φ = 6984290304.

The previous prime is 20952889343. The next prime is 20952889381. The reversal of 20952889344 is 44398825902.

20952889344 is a `hidden beast` number, since 2 + 0 + 9 + 528 + 89 + 34 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20952889343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 549952 + ... + 586815.

It is an arithmetic number, because the mean of its divisors is an integer number (840497840).

Almost surely, 2^20952889344 is an apocalyptic number.

20952889344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20952889344 is an abundant number, since it is smaller than the sum of its proper divisors (39562955136).

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

20952889344 is a wasteful number, since it uses less digits than its factorization.

20952889344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136795 (or 1136772 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 20952889344 in words is "twenty billion, nine hundred fifty-two million, eight hundred eighty-nine thousand, three hundred forty-four".