257136770383 has 2 divisors, whose sum is σ = 257136770384. Its totient is φ = 257136770382.

The previous prime is 257136770377. The next prime is 257136770483. The reversal of 257136770383 is 383077631752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257136770383 - 2¹³ = 257136762191 is a prime.

It is a super-2 number, since 2×257136770383² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257136770383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257136770353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128568385191 + 128568385192.

It is an arithmetic number, because the mean of its divisors is an integer number (128568385192).

Almost surely, 2^257136770383 is an apocalyptic number.

257136770383 is a deficient number, since it is larger than the sum of its proper divisors (1).

257136770383 is an equidigital number, since it uses as much as digits as its factorization.

257136770383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4445280, while the sum is 52.

The spelling of 257136770383 in words is "two hundred fifty-seven billion, one hundred thirty-six million, seven hundred seventy thousand, three hundred eighty-three".