20039142866 has 16 divisors (see below), whose sum is σ = 30150504384. Its totient is φ = 9989022384.

The previous prime is 20039142857. The next prime is 20039142869. The reversal of 20039142866 is 66824193002.

It is not an unprimeable number, because it can be changed into a prime (20039142869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880061 + ... + 902543.

It is an arithmetic number, because the mean of its divisors is an integer number (1884406524).

Almost surely, 2^20039142866 is an apocalyptic number.

20039142866 is a deficient number, since it is larger than the sum of its proper divisors (10111361518).

20039142866 is a wasteful number, since it uses less digits than its factorization.

20039142866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23825.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 20039142866 in words is "twenty billion, thirty-nine million, one hundred forty-two thousand, eight hundred sixty-six".