20841144960 has 64 divisors (see below), whose sum is σ = 66431155680. Its totient is φ = 5557638144.

The previous prime is 20841144949. The next prime is 20841144971. The reversal of 20841144960 is 6944114802.

It is an interprime number because it is at equal distance from previous prime (20841144949) and next prime (20841144971).

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5425462 + ... + 5429301.

Almost surely, 2^20841144960 is an apocalyptic number.

20841144960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20841144960 is an abundant number, since it is smaller than the sum of its proper divisors (45590010720).

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

20841144960 is a wasteful number, since it uses less digits than its factorization.

20841144960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10854785 (or 10854773 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 20841144960 in words is "twenty billion, eight hundred forty-one million, one hundred forty-four thousand, nine hundred sixty".