2557665293267 has 12 divisors (see below), whose sum is σ = 2978509261536. Its totient is φ = 2189878039440.

The previous prime is 2557665293233. The next prime is 2557665293303. The reversal of 2557665293267 is 7623925667552.

It is a happy number.

2557665293267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2557665293267 - 2⁶ = 2557665293203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2557665293867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28603688 + ... + 28692965.

It is an arithmetic number, because the mean of its divisors is an integer number (248209105128).

Almost surely, 2^{2557665293267} is an apocalyptic number.

2557665293267 is a deficient number, since it is larger than the sum of its proper divisors (420843968269).

2557665293267 is an equidigital number, since it uses as much as digits as its factorization.

2557665293267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57297578 (or 57297571 counting only the distinct ones).

The product of its digits is 285768000, while the sum is 65.

The spelling of 2557665293267 in words is "two trillion, five hundred fifty-seven billion, six hundred sixty-five million, two hundred ninety-three thousand, two hundred sixty-seven".