256083983999 has 8 divisors (see below), whose sum is σ = 274648166640. Its totient is φ = 238028409216.

The previous prime is 256083983993. The next prime is 256083984001. The reversal of 256083983999 is 999389380652.

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 256083983999 - 2²⁴ = 256067206783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256083983993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127150922 + ... + 127152935.

It is an arithmetic number, because the mean of its divisors is an integer number (34331020830).

Almost surely, 2^256083983999 is an apocalyptic number.

256083983999 is a deficient number, since it is larger than the sum of its proper divisors (18564182641).

256083983999 is a wasteful number, since it uses less digits than its factorization.

256083983999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254303929.

The product of its (nonzero) digits is 226748160, while the sum is 71.

The spelling of 256083983999 in words is "two hundred fifty-six billion, eighty-three million, nine hundred eighty-three thousand, nine hundred ninety-nine".