256763073347752 has 8 divisors (see below), whose sum is σ = 481430762527050. Its totient is φ = 128381536673872.

The previous prime is 256763073347719. The next prime is 256763073347779. The reversal of 256763073347752 is 257743370367652.

It can be written as a sum of positive squares in only one way, i.e., 233293059836356 + 23470013511396 = 15273934^2 + 4844586^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16047692084227 + ... + 16047692084242.

Almost surely, 2^{256763073347752} is an apocalyptic number.

It is an amenable number.

256763073347752 is a deficient number, since it is larger than the sum of its proper divisors (224667689179298).

256763073347752 is a wasteful number, since it uses less digits than its factorization.

256763073347752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32095384168475 (or 32095384168471 counting only the distinct ones).

The product of its (nonzero) digits is 933508800, while the sum is 67.

The spelling of 256763073347752 in words is "two hundred fifty-six trillion, seven hundred sixty-three billion, seventy-three million, three hundred forty-seven thousand, seven hundred fifty-two".