17861282401 has 2 divisors, whose sum is σ = 17861282402. Its totient is φ = 17861282400.

The previous prime is 17861282399. The next prime is 17861282447. The reversal of 17861282401 is 10428216871.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12149550625 + 5711731776 = 110225^2 + 75576^2 .

It is a cyclic number.

It is not a de Polignac number, because 17861282401 - 2¹ = 17861282399 is a prime.

Together with 17861282399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (17861282701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8930641200 + 8930641201.

It is an arithmetic number, because the mean of its divisors is an integer number (8930641201).

Almost surely, 2^17861282401 is an apocalyptic number.

It is an amenable number.

17861282401 is a deficient number, since it is larger than the sum of its proper divisors (1).

17861282401 is an equidigital number, since it uses as much as digits as its factorization.

17861282401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 40.

The spelling of 17861282401 in words is "seventeen billion, eight hundred sixty-one million, two hundred eighty-two thousand, four hundred one".