2017172040383 has 2 divisors, whose sum is σ = 2017172040384. Its totient is φ = 2017172040382.

The previous prime is 2017172040371. The next prime is 2017172040461. The reversal of 2017172040383 is 3830402717102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2017172040383 - 2¹² = 2017172036287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2017172040343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1008586020191 + 1008586020192.

It is an arithmetic number, because the mean of its divisors is an integer number (1008586020192).

Almost surely, 2^{2017172040383} is an apocalyptic number.

2017172040383 is a deficient number, since it is larger than the sum of its proper divisors (1).

2017172040383 is an equidigital number, since it uses as much as digits as its factorization.

2017172040383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 38.

Adding to 2017172040383 its reverse (3830402717102), we get a palindrome (5847574757485).

The spelling of 2017172040383 in words is "two trillion, seventeen billion, one hundred seventy-two million, forty thousand, three hundred eighty-three".