20510133330 has 16 divisors (see below), whose sum is σ = 49224320064. Its totient is φ = 5469368880.

The previous prime is 20510133271. The next prime is 20510133359. The reversal of 20510133330 is 3333101502.

It is a junction number, because it is equal to n+sod(n) for n = 20510133297 and 20510133306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341835526 + ... + 341835585.

It is an arithmetic number, because the mean of its divisors is an integer number (3076520004).

Almost surely, 2^20510133330 is an apocalyptic number.

20510133330 is an abundant number, since it is smaller than the sum of its proper divisors (28714186734).

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

20510133330 is a wasteful number, since it uses less digits than its factorization.

20510133330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683671121.

The product of its (nonzero) digits is 810, while the sum is 21.

Adding to 20510133330 its reverse (3333101502), we get a palindrome (23843234832).

The spelling of 20510133330 in words is "twenty billion, five hundred ten million, one hundred thirty-three thousand, three hundred thirty".