2646410489856 has 624 divisors, whose sum is σ = 9600690758400. Its totient is φ = 716293767168.

The previous prime is 2646410489803. The next prime is 2646410489869. The reversal of 2646410489856 is 6589840146462.

2646410489856 is a `hidden beast` number, since 2 + 6 + 4 + 64 + 10 + 489 + 85 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 2646410489793 and 2646410489802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102948301 + ... + 102974003.

Almost surely, 2^{2646410489856} 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 2646410489856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4800345379200).

2646410489856 is an abundant number, since it is smaller than the sum of its proper divisors (6954280268544).

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

2646410489856 is a wasteful number, since it uses less digits than its factorization.

2646410489856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25769 (or 25734 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 63.

The spelling of 2646410489856 in words is "two trillion, six hundred forty-six billion, four hundred ten million, four hundred eighty-nine thousand, eight hundred fifty-six".