257074674187 has 2 divisors, whose sum is σ = 257074674188. Its totient is φ = 257074674186.

The previous prime is 257074674119. The next prime is 257074674211. The reversal of 257074674187 is 781476470752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257074674187 - 2¹¹ = 257074672139 is a prime.

It is a super-2 number, since 2×257074674187² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (257074684187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128537337093 + 128537337094.

It is an arithmetic number, because the mean of its divisors is an integer number (128537337094).

Almost surely, 2^257074674187 is an apocalyptic number.

257074674187 is a deficient number, since it is larger than the sum of its proper divisors (1).

257074674187 is an equidigital number, since it uses as much as digits as its factorization.

257074674187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18439680, while the sum is 58.

The spelling of 257074674187 in words is "two hundred fifty-seven billion, seventy-four million, six hundred seventy-four thousand, one hundred eighty-seven".