2606123456 has 56 divisors (see below), whose sum is σ = 5285719680. Its totient is φ = 1274515200.

The previous prime is 2606123447. The next prime is 2606123459. The reversal of 2606123456 is 6543216062.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606123459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795101 + ... + 798371.

Almost surely, 2^2606123456 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 2606123456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2642859840).

2606123456 is an abundant number, since it is smaller than the sum of its proper divisors (2679596224).

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

2606123456 is a wasteful number, since it uses less digits than its factorization.

2606123456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553 (or 3543 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2606123456 is about 51050.2052493425. The cubic root of 2606123456 is about 1376.1475301525.

The spelling of 2606123456 in words is "two billion, six hundred six million, one hundred twenty-three thousand, four hundred fifty-six".