20452523799 has 16 divisors (see below), whose sum is σ = 28830665600. Its totient is φ = 12860967456.

The previous prime is 20452523779. The next prime is 20452523809. The reversal of 20452523799 is 99732525402.

It is not a de Polignac number, because 20452523799 - 2⁷ = 20452523671 is a prime.

It is a super-2 number, since 2×20452523799² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452523759) 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, 770389 + ... + 796494.

It is an arithmetic number, because the mean of its divisors is an integer number (1801916600).

Almost surely, 2^20452523799 is an apocalyptic number.

20452523799 is a deficient number, since it is larger than the sum of its proper divisors (8378141801).

20452523799 is a wasteful number, since it uses less digits than its factorization.

20452523799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567134.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 20452523799 in words is "twenty billion, four hundred fifty-two million, five hundred twenty-three thousand, seven hundred ninety-nine".