20442777824 has 48 divisors (see below), whose sum is σ = 46550464128. Its totient is φ = 8655626112.

The previous prime is 20442777779. The next prime is 20442777827. The reversal of 20442777824 is 42877724402.

It is a super-2 number, since 2×20442777824² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442777827) 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 7 ways as a sum of consecutive naturals, for example, 531182 + ... + 568365.

It is an arithmetic number, because the mean of its divisors is an integer number (969801336).

Almost surely, 2^20442777824 is an apocalyptic number.

It is an amenable number.

20442777824 is an abundant number, since it is smaller than the sum of its proper divisors (26107686304).

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

20442777824 is a wasteful number, since it uses less digits than its factorization.

20442777824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099647 (or 1099639 counting only the distinct ones).

The product of its (nonzero) digits is 1404928, while the sum is 47.

The spelling of 20442777824 in words is "twenty billion, four hundred forty-two million, seven hundred seventy-seven thousand, eight hundred twenty-four".