20885547133 has 16 divisors (see below), whose sum is σ = 22974022656. Its totient is φ = 18829214640.

The previous prime is 20885547127. The next prime is 20885547173. The reversal of 20885547133 is 33174558802.

It is a cyclic number.

It is not a de Polignac number, because 20885547133 - 2¹⁷ = 20885416061 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 (20885547173) 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 15 ways as a sum of consecutive naturals, for example, 824860 + ... + 849802.

It is an arithmetic number, because the mean of its divisors is an integer number (1435876416).

Almost surely, 2^20885547133 is an apocalyptic number.

It is an amenable number.

20885547133 is a deficient number, since it is larger than the sum of its proper divisors (2088475523).

20885547133 is a wasteful number, since it uses less digits than its factorization.

20885547133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25584.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 20885547133 in words is "twenty billion, eight hundred eighty-five million, five hundred forty-seven thousand, one hundred thirty-three".