256099374773 has 16 divisors (see below), whose sum is σ = 279959744256. Its totient is φ = 232335915840.

The previous prime is 256099374719. The next prime is 256099374781. The reversal of 256099374773 is 377473990652.

It is a cyclic number.

It is not a de Polignac number, because 256099374773 - 2¹² = 256099370677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256099314773) 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, 11838515 + ... + 11860127.

It is an arithmetic number, because the mean of its divisors is an integer number (17497484016).

Almost surely, 2^256099374773 is an apocalyptic number.

It is an amenable number.

256099374773 is a deficient number, since it is larger than the sum of its proper divisors (23860369483).

256099374773 is a wasteful number, since it uses less digits than its factorization.

256099374773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23804.

The product of its (nonzero) digits is 60011280, while the sum is 62.

The spelling of 256099374773 in words is "two hundred fifty-six billion, ninety-nine million, three hundred seventy-four thousand, seven hundred seventy-three".