9457081931257 has 2 divisors, whose sum is σ = 9457081931258. Its totient is φ = 9457081931256.

The previous prime is 9457081931237. The next prime is 9457081931273. The reversal of 9457081931257 is 7521391807549.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9083930769936 + 373151161321 = 3013956^2 + 610861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9457081931257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9457081931195 and 9457081931204.

It is not a weakly prime, because it can be changed into another prime (9457081931237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4728540965628 + 4728540965629.

It is an arithmetic number, because the mean of its divisors is an integer number (4728540965629).

Almost surely, 2^{9457081931257} is an apocalyptic number.

It is an amenable number.

9457081931257 is a deficient number, since it is larger than the sum of its proper divisors (1).

9457081931257 is an equidigital number, since it uses as much as digits as its factorization.

9457081931257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 61.

The spelling of 9457081931257 in words is "nine trillion, four hundred fifty-seven billion, eighty-one million, nine hundred thirty-one thousand, two hundred fifty-seven".