2785481664732 has 216 divisors, whose sum is σ = 7841097023760. Its totient is φ = 832771031040.

The previous prime is 2785481664709. The next prime is 2785481664751. The reversal of 2785481664732 is 2374661845872.

2785481664732 is a `hidden beast` number, since 2 + 7 + 8 + 548 + 16 + 6 + 4 + 73 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2785481664732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 173100007 + ... + 173116097.

It is an arithmetic number, because the mean of its divisors is an integer number (36301375110).

Almost surely, 2^{2785481664732} 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 2785481664732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3920548511880).

2785481664732 is an abundant number, since it is smaller than the sum of its proper divisors (5055615359028).

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

2785481664732 is a wasteful number, since it uses less digits than its factorization.

2785481664732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16933 (or 16915 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 63.

The spelling of 2785481664732 in words is "two trillion, seven hundred eighty-five billion, four hundred eighty-one million, six hundred sixty-four thousand, seven hundred thirty-two".