2615645380608 has 168 divisors, whose sum is σ = 8137069710588. Its totient is φ = 804813668352.

The previous prime is 2615645380597. The next prime is 2615645380633. The reversal of 2615645380608 is 8060835465162.

2615645380608 is a `hidden beast` number, since 2 + 6 + 1 + 56 + 453 + 80 + 60 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2219289513984 + 396355866624 = 1489728^2 + 629568^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406035 + ... + 2322962.

Almost surely, 2^{2615645380608} 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 2615645380608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4068534855294).

2615645380608 is an abundant number, since it is smaller than the sum of its proper divisors (5521424329980).

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

2615645380608 is a wasteful number, since it uses less digits than its factorization.

2615645380608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729042 (or 2729015 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 2615645380608 in words is "two trillion, six hundred fifteen billion, six hundred forty-five million, three hundred eighty thousand, six hundred eight".