20331276066 has 24 divisors (see below), whose sum is σ = 44060540160. Its totient is φ = 6775639416.

The previous prime is 20331276037. The next prime is 20331276083. The reversal of 20331276066 is 66067213302.

20331276066 is a `hidden beast` number, since 2 + 0 + 33 + 12 + 7 + 606 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20331276066.

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 11 ways as a sum of consecutive naturals, for example, 33010 + ... + 204333.

It is an arithmetic number, because the mean of its divisors is an integer number (1835855840).

Almost surely, 2^20331276066 is an apocalyptic number.

20331276066 is an abundant number, since it is smaller than the sum of its proper divisors (23729264094).

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

20331276066 is a wasteful number, since it uses less digits than its factorization.

20331276066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242110 (or 242107 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

Adding to 20331276066 its reverse (66067213302), we get a palindrome (86398489368).

It can be divided in two parts, 203312 and 76066, that added together give a triangular number (279378 = T₇₄₇).

The spelling of 20331276066 in words is "twenty billion, three hundred thirty-one million, two hundred seventy-six thousand, sixty-six".