20344057440 has 96 divisors (see below), whose sum is σ = 73238618880. Its totient is φ = 4650069504.

The previous prime is 20344057439. The next prime is 20344057441. The reversal of 20344057440 is 4475044302.

It is an interprime number because it is at equal distance from previous prime (20344057439) and next prime (20344057441).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344057441) 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 15 ways as a sum of consecutive naturals, for example, 3024030 + ... + 3030749.

It is an arithmetic number, because the mean of its divisors is an integer number (762902280).

Almost surely, 2^20344057440 is an apocalyptic number.

20344057440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344057440 is an abundant number, since it is smaller than the sum of its proper divisors (52894561440).

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

20344057440 is a wasteful number, since it uses less digits than its factorization.

20344057440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054804 (or 6054796 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 33.

The spelling of 20344057440 in words is "twenty billion, three hundred forty-four million, fifty-seven thousand, four hundred forty".