257949377083 has 2 divisors, whose sum is σ = 257949377084. Its totient is φ = 257949377082.

The previous prime is 257949377053. The next prime is 257949377117. The reversal of 257949377083 is 380773949752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257949377083 - 2¹³ = 257949368891 is a prime.

It is a super-2 number, since 2×257949377083² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (257949377053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128974688541 + 128974688542.

It is an arithmetic number, because the mean of its divisors is an integer number (128974688542).

Almost surely, 2^257949377083 is an apocalyptic number.

257949377083 is a deficient number, since it is larger than the sum of its proper divisors (1).

257949377083 is an equidigital number, since it uses as much as digits as its factorization.

257949377083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80015040, while the sum is 64.

The spelling of 257949377083 in words is "two hundred fifty-seven billion, nine hundred forty-nine million, three hundred seventy-seven thousand, eighty-three".