256503356713077 has 16 divisors (see below), whose sum is σ = 348564261427200. Its totient is φ = 167746550756400.

The previous prime is 256503356713061. The next prime is 256503356713111. The reversal of 256503356713077 is 770317653305652.

It is a happy number.

It is not a de Polignac number, because 256503356713077 - 2⁴ = 256503356713061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256503356713077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256503356713027) 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, 3025689049 + ... + 3025773822.

It is an arithmetic number, because the mean of its divisors is an integer number (21785266339200).

Almost surely, 2^{256503356713077} is an apocalyptic number.

It is an amenable number.

256503356713077 is a deficient number, since it is larger than the sum of its proper divisors (92060904714123).

256503356713077 is a wasteful number, since it uses less digits than its factorization.

256503356713077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6051463144.

The product of its (nonzero) digits is 83349000, while the sum is 60.

The spelling of 256503356713077 in words is "two hundred fifty-six trillion, five hundred three billion, three hundred fifty-six million, seven hundred thirteen thousand, seventy-seven".