20502001853 has 8 divisors (see below), whose sum is σ = 21736920960. Its totient is φ = 19270296000.

The previous prime is 20502001837. The next prime is 20502001909. The reversal of 20502001853 is 35810020502.

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 20502001853 - 2⁴ = 20502001837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20502001823) 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, 790163 + ... + 815696.

It is an arithmetic number, because the mean of its divisors is an integer number (2717115120).

Almost surely, 2^20502001853 is an apocalyptic number.

It is an amenable number.

20502001853 is a deficient number, since it is larger than the sum of its proper divisors (1234919107).

20502001853 is a wasteful number, since it uses less digits than its factorization.

20502001853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606627.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 20502001853 in words is "twenty billion, five hundred two million, one thousand, eight hundred fifty-three".