17420548414457 has 2 divisors, whose sum is σ = 17420548414458. Its totient is φ = 17420548414456.

The previous prime is 17420548414453. The next prime is 17420548414469. The reversal of 17420548414457 is 75441484502471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14829153546496 + 2591394867961 = 3850864^2 + 1609781^2 .

It is an emirp because it is prime and its reverse (75441484502471) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17420548414457 - 2² = 17420548414453 is a prime.

It is not a weakly prime, because it can be changed into another prime (17420548414453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8710274207228 + 8710274207229.

It is an arithmetic number, because the mean of its divisors is an integer number (8710274207229).

Almost surely, 2^{17420548414457} is an apocalyptic number.

It is an amenable number.

17420548414457 is a deficient number, since it is larger than the sum of its proper divisors (1).

17420548414457 is an equidigital number, since it uses as much as digits as its factorization.

17420548414457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20070400, while the sum is 56.

The spelling of 17420548414457 in words is "seventeen trillion, four hundred twenty billion, five hundred forty-eight million, four hundred fourteen thousand, four hundred fifty-seven".