20200016986 has 4 divisors (see below), whose sum is σ = 30300025482. Its totient is φ = 10100008492.

The previous prime is 20200016891. The next prime is 20200016989. The reversal of 20200016986 is 68961000202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68961000202 = 2 ⋅34480500101.

It can be written as a sum of positive squares in only one way, i.e., 12649275961 + 7550741025 = 112469^2 + 86895^2 .

It is not an unprimeable number, because it can be changed into a prime (20200016989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050004245 + ... + 5050004248.

Almost surely, 2^20200016986 is an apocalyptic number.

20200016986 is a deficient number, since it is larger than the sum of its proper divisors (10100008496).

20200016986 is a wasteful number, since it uses less digits than its factorization.

20200016986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100008495.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 20200016986 in words is "twenty billion, two hundred million, sixteen thousand, nine hundred eighty-six".