20566130633430 has 32 divisors (see below), whose sum is σ = 49500142524000. Its totient is φ = 5468587168512.

The previous prime is 20566130633429. The next prime is 20566130633471. The reversal of 20566130633430 is 3433603166502.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 982135215 + ... + 982156154.

It is an arithmetic number, because the mean of its divisors is an integer number (1546879453875).

Almost surely, 2^{20566130633430} is an apocalyptic number.

20566130633430 is an abundant number, since it is smaller than the sum of its proper divisors (28934011890570).

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

20566130633430 is a wasteful number, since it uses less digits than its factorization.

20566130633430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964291728.

The product of its (nonzero) digits is 699840, while the sum is 42.

Adding to 20566130633430 its reverse (3433603166502), we get a palindrome (23999733799932).

The spelling of 20566130633430 in words is "twenty trillion, five hundred sixty-six billion, one hundred thirty million, six hundred thirty-three thousand, four hundred thirty".