20624573444 has 24 divisors (see below), whose sum is σ = 36367963800. Its totient is φ = 10233851904.

The previous prime is 20624573443. The next prime is 20624573477. The reversal of 20624573444 is 44437542602.

It can be written as a sum of positive squares in 4 ways, for example, as 71910400 + 20552663044 = 8480^2 + 143362^2 .

It is a super-2 number, since 2×20624573444² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20624573443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672182 + ... + 702194.

It is an arithmetic number, because the mean of its divisors is an integer number (1515331825).

Almost surely, 2^20624573444 is an apocalyptic number.

It is an amenable number.

20624573444 is a deficient number, since it is larger than the sum of its proper divisors (15743390356).

20624573444 is a wasteful number, since it uses less digits than its factorization.

20624573444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31319 (or 31317 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 41.

The spelling of 20624573444 in words is "twenty billion, six hundred twenty-four million, five hundred seventy-three thousand, four hundred forty-four".