256163514037 has 2 divisors, whose sum is σ = 256163514038. Its totient is φ = 256163514036.

The previous prime is 256163514011. The next prime is 256163514071. The reversal of 256163514037 is 730415361652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152557423396 + 103606090641 = 390586^2 + 321879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256163514037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256163513984 and 256163514002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256163514097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128081757018 + 128081757019.

It is an arithmetic number, because the mean of its divisors is an integer number (128081757019).

Almost surely, 2^256163514037 is an apocalyptic number.

It is an amenable number.

256163514037 is a deficient number, since it is larger than the sum of its proper divisors (1).

256163514037 is an equidigital number, since it uses as much as digits as its factorization.

256163514037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 43.

Adding to 256163514037 its reverse (730415361652), we get a palindrome (986578875689).

The spelling of 256163514037 in words is "two hundred fifty-six billion, one hundred sixty-three million, five hundred fourteen thousand, thirty-seven".