7934297844457 has 2 divisors, whose sum is σ = 7934297844458. Its totient is φ = 7934297844456.

The previous prime is 7934297844449. The next prime is 7934297844463. The reversal of 7934297844457 is 7544487924397.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7912637069481 + 21660774976 = 2812941^2 + 147176^2 .

It is a cyclic number.

It is not a de Polignac number, because 7934297844457 - 2³ = 7934297844449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7934297844457.

It is not a weakly prime, because it can be changed into another prime (7934297844427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3967148922228 + 3967148922229.

It is an arithmetic number, because the mean of its divisors is an integer number (3967148922229).

Almost surely, 2^{7934297844457} is an apocalyptic number.

It is an amenable number.

7934297844457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7934297844457 is an equidigital number, since it uses as much as digits as its factorization.

7934297844457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1706987520, while the sum is 73.

The spelling of 7934297844457 in words is "seven trillion, nine hundred thirty-four billion, two hundred ninety-seven million, eight hundred forty-four thousand, four hundred fifty-seven".