20216671850 has 24 divisors (see below), whose sum is σ = 38219458188. Its totient is φ = 7954099200.

The previous prime is 20216671843. The next prime is 20216671877. The reversal of 20216671850 is 5817661202.

It can be written as a sum of positive squares in 6 ways, for example, as 7044748489 + 13171923361 = 83933^2 + 114769^2 .

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 11 ways as a sum of consecutive naturals, for example, 3311159 + ... + 3317258.

Almost surely, 2^20216671850 is an apocalyptic number.

20216671850 is a deficient number, since it is larger than the sum of its proper divisors (18002786338).

20216671850 is a wasteful number, since it uses less digits than its factorization.

20216671850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6628490 (or 6628485 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 20216671850 in words is "twenty billion, two hundred sixteen million, six hundred seventy-one thousand, eight hundred fifty".