2666020460256 has 96 divisors (see below), whose sum is σ = 7776392551200. Its totient is φ = 888616396800.

The previous prime is 2666020460171. The next prime is 2666020460263. The reversal of 2666020460256 is 6520640206662.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×2666020460256² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14622456 + ... + 14803656.

It is an arithmetic number, because the mean of its divisors is an integer number (81004089075).

Almost surely, 2^{2666020460256} is an apocalyptic number.

It is an amenable number.

2666020460256 is an abundant number, since it is smaller than the sum of its proper divisors (5110372090944).

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

2666020460256 is a wasteful number, since it uses less digits than its factorization.

2666020460256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198249 (or 198235 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 2666020460256 in words is "two trillion, six hundred sixty-six billion, twenty million, four hundred sixty thousand, two hundred fifty-six".