2557800077828 has 48 divisors (see below), whose sum is σ = 4750759157760. Its totient is φ = 1202352168864.

The previous prime is 2557800077827. The next prime is 2557800077881. The reversal of 2557800077828 is 8287700087552.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is not an unprimeable number, because it can be changed into a prime (2557800077827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33631901 + ... + 33707867.

It is an arithmetic number, because the mean of its divisors is an integer number (98974149120).

Almost surely, 2^{2557800077828} is an apocalyptic number.

It is an amenable number.

2557800077828 is a deficient number, since it is larger than the sum of its proper divisors (2192959079932).

2557800077828 is a wasteful number, since it uses less digits than its factorization.

2557800077828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82256 (or 82254 counting only the distinct ones).

The product of its (nonzero) digits is 17561600, while the sum is 59.

The spelling of 2557800077828 in words is "two trillion, five hundred fifty-seven billion, eight hundred million, seventy-seven thousand, eight hundred twenty-eight".