20572450424 has 16 divisors (see below), whose sum is σ = 38577475800. Its totient is φ = 10285123552.

The previous prime is 20572450411. The next prime is 20572450429. The reversal of 20572450424 is 42405427502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20572450429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55454 + ... + 210285.

Almost surely, 2^20572450424 is an apocalyptic number.

It is an amenable number.

20572450424 is a deficient number, since it is larger than the sum of its proper divisors (18005025376).

20572450424 is a wasteful number, since it uses less digits than its factorization.

20572450424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275422 (or 275418 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 35.

Adding to 20572450424 its reverse (42405427502), we get a palindrome (62977877926).

The spelling of 20572450424 in words is "twenty billion, five hundred seventy-two million, four hundred fifty thousand, four hundred twenty-four".