666256054306 has 16 divisors (see below), whose sum is σ = 1023787677528. Its totient is φ = 324993945600.

The previous prime is 666256054283. The next prime is 666256054333. The reversal of 666256054306 is 603450652666.

666256054306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 101114460225 + 565141594081 = 317985^2 + 751759^2 .

It is a super-2 number, since 2×666256054306² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 666256054306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3609886 + ... + 3789958.

Almost surely, 2^666256054306 is an apocalyptic number.

666256054306 is a deficient number, since it is larger than the sum of its proper divisors (357531623222).

666256054306 is a wasteful number, since it uses less digits than its factorization.

666256054306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225237.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 666256054306 in words is "six hundred sixty-six billion, two hundred fifty-six million, fifty-four thousand, three hundred six".