521314432250123 has 4 divisors (see below), whose sum is σ = 521461737829320. Its totient is φ = 521167126670928.

The previous prime is 521314432250119. The next prime is 521314432250167. The reversal of 521314432250123 is 321052234413125.

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 521314432250123 - 2² = 521314432250119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521314432250113) 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, 73652784290 + ... + 73652791367.

It is an arithmetic number, because the mean of its divisors is an integer number (130365434457330).

Almost surely, 2^{521314432250123} is an apocalyptic number.

521314432250123 is a deficient number, since it is larger than the sum of its proper divisors (147305579197).

521314432250123 is a wasteful number, since it uses less digits than its factorization.

521314432250123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147305579196.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 521314432250123 its reverse (321052234413125), we get a palindrome (842366666663248).

The spelling of 521314432250123 in words is "five hundred twenty-one trillion, three hundred fourteen billion, four hundred thirty-two million, two hundred fifty thousand, one hundred twenty-three".