612312387606 has 128 divisors (see below), whose sum is σ = 1440270720000. Its totient is φ = 192433747968.

The previous prime is 612312387571. The next prime is 612312387637. The reversal of 612312387606 is 606783213216.

612312387606 is a `hidden beast` number, since 6 + 1 + 2 + 3 + 1 + 2 + 38 + 7 + 606 = 666.

It is a super-2 number, since 2×612312387606² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46279000 + ... + 46292228.

It is an arithmetic number, because the mean of its divisors is an integer number (11252115000).

Almost surely, 2^612312387606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612312387606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720135360000).

612312387606 is an abundant number, since it is smaller than the sum of its proper divisors (827958332394).

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

612312387606 is a wasteful number, since it uses less digits than its factorization.

612312387606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13795 (or 13789 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 612312387606 in words is "six hundred twelve billion, three hundred twelve million, three hundred eighty-seven thousand, six hundred six".