20023645724 has 6 divisors (see below), whose sum is σ = 35041380024. Its totient is φ = 10011822860.

The previous prime is 20023645699. The next prime is 20023645727. The reversal of 20023645724 is 42754632002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023645727) 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 as a sum of consecutive naturals, namely, 2502955712 + ... + 2502955719.

It is an arithmetic number, because the mean of its divisors is an integer number (5840230004).

Almost surely, 2^20023645724 is an apocalyptic number.

It is an amenable number.

20023645724 is a deficient number, since it is larger than the sum of its proper divisors (15017734300).

20023645724 is a wasteful number, since it uses less digits than its factorization.

20023645724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005911435 (or 5005911433 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 20023645724 in words is "twenty billion, twenty-three million, six hundred forty-five thousand, seven hundred twenty-four".