20536666698 has 8 divisors (see below), whose sum is σ = 41073333408. Its totient is φ = 6845555564.

The previous prime is 20536666697. The next prime is 20536666771. The reversal of 20536666698 is 89666663502.

It is a sphenic number, since it is the product of 3 distinct primes.

20536666698 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20536666693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711388886 + ... + 1711388897.

It is an arithmetic number, because the mean of its divisors is an integer number (5134166676).

Almost surely, 2^20536666698 is an apocalyptic number.

20536666698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20536666698 is a wasteful number, since it uses less digits than its factorization.

20536666698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422777788.

The product of its (nonzero) digits is 16796160, while the sum is 57.

The spelling of 20536666698 in words is "twenty billion, five hundred thirty-six million, six hundred sixty-six thousand, six hundred ninety-eight".