256743023363254 has 8 divisors (see below), whose sum is σ = 385121066239728. Its totient is φ = 128369334616680.

The previous prime is 256743023363237. The next prime is 256743023363257. The reversal of 256743023363254 is 452363320347652.

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

It is a junction number, because it is equal to n+sod(n) for n = 256743023363195 and 256743023363204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256743023363257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1088385057 + ... + 1088620924.

It is an arithmetic number, because the mean of its divisors is an integer number (48140133279966).

Almost surely, 2^{256743023363254} is an apocalyptic number.

256743023363254 is a deficient number, since it is larger than the sum of its proper divisors (128378042876474).

256743023363254 is a wasteful number, since it uses less digits than its factorization.

256743023363254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177064950.

The product of its (nonzero) digits is 65318400, while the sum is 55.

The spelling of 256743023363254 in words is "two hundred fifty-six trillion, seven hundred forty-three billion, twenty-three million, three hundred sixty-three thousand, two hundred fifty-four".