511520523245223 has 4 divisors (see below), whose sum is σ = 682027364326968. Its totient is φ = 341013682163480.

The previous prime is 511520523245159. The next prime is 511520523245231. The reversal of 511520523245223 is 322542325025115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 511520523245223 - 2⁶ = 511520523245159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511520523241223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85253420540868 + ... + 85253420540873.

It is an arithmetic number, because the mean of its divisors is an integer number (170506841081742).

Almost surely, 2^{511520523245223} is an apocalyptic number.

511520523245223 is a deficient number, since it is larger than the sum of its proper divisors (170506841081745).

511520523245223 is a wasteful number, since it uses less digits than its factorization.

511520523245223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170506841081744.

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 511520523245223 in words is "five hundred eleven trillion, five hundred twenty billion, five hundred twenty-three million, two hundred forty-five thousand, two hundred twenty-three".