256336142783 has 16 divisors (see below), whose sum is σ = 302072085504. Its totient is φ = 212926644000.

The previous prime is 256336142767. The next prime is 256336142791. The reversal of 256336142783 is 387241633652.

It is a happy number.

It is not a de Polignac number, because 256336142783 - 2⁴ = 256336142767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256336142683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1906535 + ... + 2036552.

It is an arithmetic number, because the mean of its divisors is an integer number (18879505344).

Almost surely, 2^256336142783 is an apocalyptic number.

256336142783 is a deficient number, since it is larger than the sum of its proper divisors (45735942721).

256336142783 is a wasteful number, since it uses less digits than its factorization.

256336142783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943382.

The product of its digits is 4354560, while the sum is 50.

The spelling of 256336142783 in words is "two hundred fifty-six billion, three hundred thirty-six million, one hundred forty-two thousand, seven hundred eighty-three".