612303402656 has 96 divisors (see below), whose sum is σ = 1382714758656. Its totient is φ = 264186208000.

The previous prime is 612303402631. The next prime is 612303402709. The reversal of 612303402656 is 656204303216.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771911 + ... + 1349241.

It is an arithmetic number, because the mean of its divisors is an integer number (14403278736).

Almost surely, 2^612303402656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612303402656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691357379328).

612303402656 is an abundant number, since it is smaller than the sum of its proper divisors (770411356000).

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

612303402656 is a wasteful number, since it uses less digits than its factorization.

612303402656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577506 (or 577498 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 612303402656 in words is "six hundred twelve billion, three hundred three million, four hundred two thousand, six hundred fifty-six".