17791043461 has 2 divisors, whose sum is σ = 17791043462. Its totient is φ = 17791043460.

The previous prime is 17791043377. The next prime is 17791043477. The reversal of 17791043461 is 16434019771.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14112014436 + 3679029025 = 118794^2 + 60655^2 .

It is a cyclic number.

It is not a de Polignac number, because 17791043461 - 2⁹ = 17791042949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17791043161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8895521730 + 8895521731.

It is an arithmetic number, because the mean of its divisors is an integer number (8895521731).

Almost surely, 2^17791043461 is an apocalyptic number.

It is an amenable number.

17791043461 is a deficient number, since it is larger than the sum of its proper divisors (1).

17791043461 is an equidigital number, since it uses as much as digits as its factorization.

17791043461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 17791043461 in words is "seventeen billion, seven hundred ninety-one million, forty-three thousand, four hundred sixty-one".