20002019985 has 32 divisors (see below), whose sum is σ = 35566997760. Its totient is φ = 10665388800.

The previous prime is 20002019963. The next prime is 20002020013. The reversal of 20002019985 is 58991020002.

It is not a de Polignac number, because 20002019985 - 2²⁰ = 20000971409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 719545 + ... + 746825.

It is an arithmetic number, because the mean of its divisors is an integer number (1111468680).

Almost surely, 2^20002019985 is an apocalyptic number.

It is an amenable number.

20002019985 is a deficient number, since it is larger than the sum of its proper divisors (15564977775).

20002019985 is a wasteful number, since it uses less digits than its factorization.

20002019985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32726 (or 32720 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

Adding to 20002019985 its reverse (58991020002), we get a palindrome (78993039987).

The spelling of 20002019985 in words is "twenty billion, two million, nineteen thousand, nine hundred eighty-five".