20444567460 has 96 divisors (see below), whose sum is σ = 58046212224. Its totient is φ = 5376000000.

The previous prime is 20444567453. The next prime is 20444567461. The reversal of 20444567460 is 6476544402.

It is not an unprimeable number, because it can be changed into a prime (20444567461) 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 31 ways as a sum of consecutive naturals, for example, 1514340 + ... + 1527780.

It is an arithmetic number, because the mean of its divisors is an integer number (604648044).

Almost surely, 2^20444567460 is an apocalyptic number.

20444567460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20444567460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29023106112).

20444567460 is an abundant number, since it is smaller than the sum of its proper divisors (37601644764).

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

20444567460 is a wasteful number, since it uses less digits than its factorization.

20444567460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13805 (or 13803 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 42.

The spelling of 20444567460 in words is "twenty billion, four hundred forty-four million, five hundred sixty-seven thousand, four hundred sixty".