7161258457 has 2 divisors, whose sum is σ = 7161258458. Its totient is φ = 7161258456.

The previous prime is 7161258431. The next prime is 7161258469. The reversal of 7161258457 is 7548521617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6990799321 + 170459136 = 83611^2 + 13056^2 .

It is a cyclic number.

It is not a de Polignac number, because 7161258457 - 2⁷ = 7161258329 is a prime.

It is not a weakly prime, because it can be changed into another prime (7161258257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3580629228 + 3580629229.

It is an arithmetic number, because the mean of its divisors is an integer number (3580629229).

Almost surely, 2^7161258457 is an apocalyptic number.

It is an amenable number.

7161258457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7161258457 is an equidigital number, since it uses as much as digits as its factorization.

7161258457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 46.

The square root of 7161258457 is about 84624.2190924088. The cubic root of 7161258457 is about 1927.5091545628.

The spelling of 7161258457 in words is "seven billion, one hundred sixty-one million, two hundred fifty-eight thousand, four hundred fifty-seven".