612442573123 has 4 divisors (see below), whose sum is σ = 612947473408. Its totient is φ = 611937672840.

The previous prime is 612442573111. The next prime is 612442573139. The reversal of 612442573123 is 321375244216.

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 612442573123 - 2²⁹ = 611905702211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612442573723) 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, 252448323 + ... + 252450748.

It is an arithmetic number, because the mean of its divisors is an integer number (153236868352).

Almost surely, 2^612442573123 is an apocalyptic number.

612442573123 is a deficient number, since it is larger than the sum of its proper divisors (504900285).

612442573123 is a wasteful number, since it uses less digits than its factorization.

612442573123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504900284.

The product of its digits is 241920, while the sum is 40.

The spelling of 612442573123 in words is "six hundred twelve billion, four hundred forty-two million, five hundred seventy-three thousand, one hundred twenty-three".