256667632045 has 8 divisors (see below), whose sum is σ = 336001263840. Its totient is φ = 186667368720.

The previous prime is 256667632043. The next prime is 256667632097. The reversal of 256667632045 is 540236766652.

256667632045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256667632045 - 2¹ = 256667632043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256667631983 and 256667632001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256667632043) 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, 2333342055 + ... + 2333342164.

It is an arithmetic number, because the mean of its divisors is an integer number (42000157980).

Almost surely, 2^256667632045 is an apocalyptic number.

It is an amenable number.

256667632045 is a deficient number, since it is larger than the sum of its proper divisors (79333631795).

256667632045 is a wasteful number, since it uses less digits than its factorization.

256667632045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666684235.

The product of its (nonzero) digits is 10886400, while the sum is 52.

The spelling of 256667632045 in words is "two hundred fifty-six billion, six hundred sixty-seven million, six hundred thirty-two thousand, forty-five".