20036661853 has 8 divisors (see below), whose sum is σ = 22516115328. Its totient is φ = 17691232944.

The previous prime is 20036661851. The next prime is 20036661859. The reversal of 20036661853 is 35816663002.

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

It is a cyclic number.

It is not a de Polignac number, because 20036661853 - 2¹ = 20036661851 is a prime.

It is a super-2 number, since 2×20036661853² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20036661851) by changing a digit.

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, 33505825 + ... + 33506422.

It is an arithmetic number, because the mean of its divisors is an integer number (2814514416).

Almost surely, 2^20036661853 is an apocalyptic number.

20036661853 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20036661853 is a deficient number, since it is larger than the sum of its proper divisors (2479453475).

20036661853 is a wasteful number, since it uses less digits than its factorization.

20036661853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67012283.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 20036661853 in words is "twenty billion, thirty-six million, six hundred sixty-one thousand, eight hundred fifty-three".