7145658197257 has 2 divisors, whose sum is σ = 7145658197258. Its totient is φ = 7145658197256.

The previous prime is 7145658197231. The next prime is 7145658197281. The reversal of 7145658197257 is 7527918565417.

7145658197257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6719106831376 + 426551365881 = 2592124^2 + 653109^2 .

It is a cyclic number.

It is not a de Polignac number, because 7145658197257 - 2³¹ = 7143510713609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7145658197192 and 7145658197201.

It is not a weakly prime, because it can be changed into another prime (7145658197957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3572829098628 + 3572829098629.

It is an arithmetic number, because the mean of its divisors is an integer number (3572829098629).

Almost surely, 2^{7145658197257} is an apocalyptic number.

It is an amenable number.

7145658197257 is a deficient number, since it is larger than the sum of its proper divisors (1).

7145658197257 is an equidigital number, since it uses as much as digits as its factorization.

7145658197257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176000, while the sum is 67.

The spelling of 7145658197257 in words is "seven trillion, one hundred forty-five billion, six hundred fifty-eight million, one hundred ninety-seven thousand, two hundred fifty-seven".