20016868386890 has 16 divisors (see below), whose sum is σ = 36641047217760. Its totient is φ = 7871039772240.

The previous prime is 20016868386887. The next prime is 20016868386919. The reversal of 20016868386890 is 9868386861002.

It is an unprimeable number.

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, 16963447196 + ... + 16963448375.

It is an arithmetic number, because the mean of its divisors is an integer number (2290065451110).

Almost surely, 2^{20016868386890} is an apocalyptic number.

20016868386890 is a deficient number, since it is larger than the sum of its proper divisors (16624178830870).

20016868386890 is a wasteful number, since it uses less digits than its factorization.

20016868386890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33926895637.

The product of its (nonzero) digits is 47775744, while the sum is 65.

The spelling of 20016868386890 in words is "twenty trillion, sixteen billion, eight hundred sixty-eight million, three hundred eighty-six thousand, eight hundred ninety".