256330053401 has 2 divisors, whose sum is σ = 256330053402. Its totient is φ = 256330053400.

The previous prime is 256330053313. The next prime is 256330053407. The reversal of 256330053401 is 104350033652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248301893401 + 8028160000 = 498299^2 + 89600^2 .

It is a cyclic number.

It is not a de Polignac number, because 256330053401 - 2¹⁸ = 256329791257 is a prime.

It is not a weakly prime, because it can be changed into another prime (256330053407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128165026700 + 128165026701.

It is an arithmetic number, because the mean of its divisors is an integer number (128165026701).

Almost surely, 2^256330053401 is an apocalyptic number.

It is an amenable number.

256330053401 is a deficient number, since it is larger than the sum of its proper divisors (1).

256330053401 is an equidigital number, since it uses as much as digits as its factorization.

256330053401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 32.

The spelling of 256330053401 in words is "two hundred fifty-six billion, three hundred thirty million, fifty-three thousand, four hundred one".