20233671171345 has 12 divisors (see below), whose sum is σ = 35071696697076. Its totient is φ = 10791291291360.

The previous prime is 20233671171289. The next prime is 20233671171451. The reversal of 20233671171345 is 54317117633202.

20233671171345 is a `hidden beast` number, since 2 + 0 + 233 + 6 + 7 + 1 + 1 + 71 + 345 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12522319838721 + 7711351332624 = 3538689^2 + 2776932^2 .

It is not a de Polignac number, because 20233671171345 - 2¹¹ = 20233671169297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 449637137141 = 20233671171345 / (2 + 0 + 2 + 3 + 3 + 6 + 7 + 1 + 1 + 7 + 1 + 3 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 20233671171345.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224818568526 + ... + 224818568615.

It is an arithmetic number, because the mean of its divisors is an integer number (2922641391423).

Almost surely, 2^{20233671171345} is an apocalyptic number.

It is an amenable number.

20233671171345 is a deficient number, since it is larger than the sum of its proper divisors (14838025525731).

20233671171345 is a wasteful number, since it uses less digits than its factorization.

20233671171345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449637137152 (or 449637137149 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 20233671171345 in words is "twenty trillion, two hundred thirty-three billion, six hundred seventy-one million, one hundred seventy-one thousand, three hundred forty-five".