20253133206 has 24 divisors (see below), whose sum is σ = 43885803000. Its totient is φ = 6750426816.

The previous prime is 20253133157. The next prime is 20253133211. The reversal of 20253133206 is 60233135202.

20253133206 is a `hidden beast` number, since 2 + 0 + 25 + 313 + 320 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20253133206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178545 + ... + 269043.

It is an arithmetic number, because the mean of its divisors is an integer number (1828575125).

Almost surely, 2^20253133206 is an apocalyptic number.

20253133206 is an abundant number, since it is smaller than the sum of its proper divisors (23632669794).

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

20253133206 is a wasteful number, since it uses less digits than its factorization.

20253133206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102940 (or 102937 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 20253133206 its reverse (60233135202), we get a palindrome (80486268408).

The spelling of 20253133206 in words is "twenty billion, two hundred fifty-three million, one hundred thirty-three thousand, two hundred six".