20655514233 has 12 divisors (see below), whose sum is σ = 31590786708. Its totient is φ = 12960322560.

The previous prime is 20655514171. The next prime is 20655514247. The reversal of 20655514233 is 33241555602.

20655514233 is a `hidden beast` number, since 2 + 0 + 65 + 551 + 42 + 3 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6656601744 + 13998912489 = 81588^2 + 118317^2 .

It is not a de Polignac number, because 20655514233 - 2¹⁰ = 20655513209 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20655514273) 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 11 ways as a sum of consecutive naturals, for example, 67501528 + ... + 67501833.

It is an arithmetic number, because the mean of its divisors is an integer number (2632565559).

Almost surely, 2^20655514233 is an apocalyptic number.

It is an amenable number.

20655514233 is a deficient number, since it is larger than the sum of its proper divisors (10935272475).

20655514233 is a wasteful number, since it uses less digits than its factorization.

20655514233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135003384 (or 135003381 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 20655514233 in words is "twenty billion, six hundred fifty-five million, five hundred fourteen thousand, two hundred thirty-three".