612528784506 has 16 divisors (see below), whose sum is σ = 1361175076800. Its totient is φ = 204176261484.

The previous prime is 612528784471. The next prime is 612528784513. The reversal of 612528784506 is 605487825216.

612528784506 is a `hidden beast` number, since 6 + 1 + 2 + 52 + 8 + 7 + 84 + 506 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 11343125639 = 612528784506 / (6 + 1 + 2 + 5 + 2 + 8 + 7 + 8 + 4 + 5 + 0 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5671562766 + ... + 5671562873.

It is an arithmetic number, because the mean of its divisors is an integer number (85073442300).

Almost surely, 2^612528784506 is an apocalyptic number.

612528784506 is an abundant number, since it is smaller than the sum of its proper divisors (748646292294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612528784506 is a wasteful number, since it uses less digits than its factorization.

612528784506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11343125650 (or 11343125644 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 612528784506 in words is "six hundred twelve billion, five hundred twenty-eight million, seven hundred eighty-four thousand, five hundred six".