612442572523 has 4 divisors (see below), whose sum is σ = 612467561088. Its totient is φ = 612417583960.

The previous prime is 612442572503. The next prime is 612442572569. The reversal of 612442572523 is 325275244216.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612442572523 is a prime.

It is a super-2 number, since 2×612442572523² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 612442572523.

It is not an unprimeable number, because it can be changed into a prime (612442572503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12457483 + ... + 12506548.

It is an arithmetic number, because the mean of its divisors is an integer number (153116890272).

Almost surely, 2^612442572523 is an apocalyptic number.

612442572523 is a deficient number, since it is larger than the sum of its proper divisors (24988565).

612442572523 is a wasteful number, since it uses less digits than its factorization.

612442572523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24988564.

The product of its digits is 806400, while the sum is 43.

The spelling of 612442572523 in words is "six hundred twelve billion, four hundred forty-two million, five hundred seventy-two thousand, five hundred twenty-three".