17741372491 has 2 divisors, whose sum is σ = 17741372492. Its totient is φ = 17741372490.

The previous prime is 17741372489. The next prime is 17741372513. The reversal of 17741372491 is 19427314771.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17741372491 - 2¹ = 17741372489 is a prime.

Together with 17741372489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (17741376491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8870686245 + 8870686246.

It is an arithmetic number, because the mean of its divisors is an integer number (8870686246).

Almost surely, 2^17741372491 is an apocalyptic number.

17741372491 is a deficient number, since it is larger than the sum of its proper divisors (1).

17741372491 is an equidigital number, since it uses as much as digits as its factorization.

17741372491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 46.

The spelling of 17741372491 in words is "seventeen billion, seven hundred forty-one million, three hundred seventy-two thousand, four hundred ninety-one".