257201454476423 has 2 divisors, whose sum is σ = 257201454476424. Its totient is φ = 257201454476422.

The previous prime is 257201454476399. The next prime is 257201454476471. The reversal of 257201454476423 is 324674454102752.

257201454476423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257201454476423 - 2¹² = 257201454472327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257201454472423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128600727238211 + 128600727238212.

It is an arithmetic number, because the mean of its divisors is an integer number (128600727238212).

Almost surely, 2^{257201454476423} is an apocalyptic number.

257201454476423 is a deficient number, since it is larger than the sum of its proper divisors (1).

257201454476423 is an equidigital number, since it uses as much as digits as its factorization.

257201454476423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45158400, while the sum is 56.

The spelling of 257201454476423 in words is "two hundred fifty-seven trillion, two hundred one billion, four hundred fifty-four million, four hundred seventy-six thousand, four hundred twenty-three".