20066112644 has 24 divisors (see below), whose sum is σ = 35290624320. Its totient is φ = 9983128736.

The previous prime is 20066112601. The next prime is 20066112691. The reversal of 20066112644 is 44621166002.

It is a self number, because there is not a number n which added to its sum of digits gives 20066112644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1889702 + ... + 1900290.

It is an arithmetic number, because the mean of its divisors is an integer number (1470442680).

Almost surely, 2^20066112644 is an apocalyptic number.

It is an amenable number.

20066112644 is a deficient number, since it is larger than the sum of its proper divisors (15224511676).

20066112644 is a wasteful number, since it uses less digits than its factorization.

20066112644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12907 (or 12905 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 20066112644 its reverse (44621166002), we get a palindrome (64687278646).

The spelling of 20066112644 in words is "twenty billion, sixty-six million, one hundred twelve thousand, six hundred forty-four".