612233345678 has 4 divisors (see below), whose sum is σ = 918350018520. Its totient is φ = 306116672838.

The previous prime is 612233345639. The next prime is 612233345687. The reversal of 612233345678 is 876543332216.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153058336418 + ... + 153058336421.

It is an arithmetic number, because the mean of its divisors is an integer number (229587504630).

Almost surely, 2^612233345678 is an apocalyptic number.

612233345678 is a deficient number, since it is larger than the sum of its proper divisors (306116672842).

612233345678 is a wasteful number, since it uses less digits than its factorization.

612233345678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306116672841.

The product of its digits is 4354560, while the sum is 50.

The spelling of 612233345678 in words is "six hundred twelve billion, two hundred thirty-three million, three hundred forty-five thousand, six hundred seventy-eight".