256500420541545 has 8 divisors (see below), whose sum is σ = 410400672866496. Its totient is φ = 136800224288816.

The previous prime is 256500420541543. The next prime is 256500420541559. The reversal of 256500420541545 is 545145024005652.

256500420541545 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 a cyclic number.

It is not a de Polignac number, because 256500420541545 - 2¹ = 256500420541543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256500420541494 and 256500420541503.

It is not an unprimeable number, because it can be changed into a prime (256500420541543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8550014018037 + ... + 8550014018066.

It is an arithmetic number, because the mean of its divisors is an integer number (51300084108312).

Almost surely, 2^{256500420541545} is an apocalyptic number.

It is an amenable number.

256500420541545 is a deficient number, since it is larger than the sum of its proper divisors (153900252324951).

256500420541545 is a wasteful number, since it uses less digits than its factorization.

256500420541545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17100028036111.

The product of its (nonzero) digits is 4800000, while the sum is 48.

The spelling of 256500420541545 in words is "two hundred fifty-six trillion, five hundred billion, four hundred twenty million, five hundred forty-one thousand, five hundred forty-five".