20315433500111 has 16 divisors (see below), whose sum is σ = 21098844264960. Its totient is φ = 19537568988000.

The previous prime is 20315433500099. The next prime is 20315433500137. The reversal of 20315433500111 is 11100533451302.

It is a cyclic number.

It is not a de Polignac number, because 20315433500111 - 2¹⁰ = 20315433499087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315433530111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55058486 + ... + 55426236.

It is an arithmetic number, because the mean of its divisors is an integer number (1318677766560).

Almost surely, 2^{20315433500111} is an apocalyptic number.

20315433500111 is a deficient number, since it is larger than the sum of its proper divisors (783410764849).

20315433500111 is a wasteful number, since it uses less digits than its factorization.

20315433500111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375286.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 20315433500111 its reverse (11100533451302), we get a palindrome (31415966951413).

The spelling of 20315433500111 in words is "twenty trillion, three hundred fifteen billion, four hundred thirty-three million, five hundred thousand, one hundred eleven".