17421832481 has 2 divisors, whose sum is σ = 17421832482. Its totient is φ = 17421832480.

The previous prime is 17421832433. The next prime is 17421832511. The reversal of 17421832481 is 18423812471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15529147456 + 1892685025 = 124616^2 + 43505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17421832481 is a prime.

It is a super-2 number, since 2×17421832481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (17421832081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8710916240 + 8710916241.

It is an arithmetic number, because the mean of its divisors is an integer number (8710916241).

Almost surely, 2^17421832481 is an apocalyptic number.

It is an amenable number.

17421832481 is a deficient number, since it is larger than the sum of its proper divisors (1).

17421832481 is an equidigital number, since it uses as much as digits as its factorization.

17421832481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 41.

The spelling of 17421832481 in words is "seventeen billion, four hundred twenty-one million, eight hundred thirty-two thousand, four hundred eighty-one".