20356504133 has 8 divisors (see below), whose sum is σ = 23583269568. Its totient is φ = 17209412064.

The previous prime is 20356504127. The next prime is 20356504211. The reversal of 20356504133 is 33140565302.

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 20356504133 - 2¹⁰ = 20356503109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20356504133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20356504433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19917791 + ... + 19918812.

It is an arithmetic number, because the mean of its divisors is an integer number (2947908696).

Almost surely, 2^20356504133 is an apocalyptic number.

It is an amenable number.

20356504133 is a deficient number, since it is larger than the sum of its proper divisors (3226765435).

20356504133 is an equidigital number, since it uses as much as digits as its factorization.

20356504133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39836683.

The product of its (nonzero) digits is 32400, while the sum is 32.

The spelling of 20356504133 in words is "twenty billion, three hundred fifty-six million, five hundred four thousand, one hundred thirty-three".