2557803257802 has 96 divisors (see below), whose sum is σ = 6176910776400. Its totient is φ = 759520613376.

The previous prime is 2557803257797. The next prime is 2557803257827. The reversal of 2557803257802 is 2087523087552.

2557803257802 is a `hidden beast` number, since 2 + 557 + 8 + 0 + 3 + 2 + 5 + 7 + 80 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 394812412281 + 2162990845521 = 628341^2 + 1470711^2 .

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, 14522724 + ... + 14697792.

Almost surely, 2^{2557803257802} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2557803257802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3088455388200).

2557803257802 is an abundant number, since it is smaller than the sum of its proper divisors (3619107518598).

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

2557803257802 is a wasteful number, since it uses less digits than its factorization.

2557803257802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177272 (or 177269 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 54.

The spelling of 2557803257802 in words is "two trillion, five hundred fifty-seven billion, eight hundred three million, two hundred fifty-seven thousand, eight hundred two".