2257765816256 has 56 divisors (see below), whose sum is σ = 4635074184240. Its totient is φ = 1089878630400.

The previous prime is 2257765816217. The next prime is 2257765816259. The reversal of 2257765816256 is 6526185677522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257765816259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32930171 + ... + 32998661.

Almost surely, 2^{2257765816256} is an apocalyptic number.

It is an amenable number.

2257765816256 is an abundant number, since it is smaller than the sum of its proper divisors (2377308367984).

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

2257765816256 is a wasteful number, since it uses less digits than its factorization.

2257765816256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86293 (or 86283 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 62.

The spelling of 2257765816256 in words is "two trillion, two hundred fifty-seven billion, seven hundred sixty-five million, eight hundred sixteen thousand, two hundred fifty-six".