172375407539 has 2 divisors, whose sum is σ = 172375407540. Its totient is φ = 172375407538.

The previous prime is 172375407499. The next prime is 172375407577. The reversal of 172375407539 is 935704573271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172375407539 is a prime.

It is a super-3 number, since 3×172375407539³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (172375407839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86187703769 + 86187703770.

It is an arithmetic number, because the mean of its divisors is an integer number (86187703770).

Almost surely, 2^172375407539 is an apocalyptic number.

172375407539 is a deficient number, since it is larger than the sum of its proper divisors (1).

172375407539 is an equidigital number, since it uses as much as digits as its factorization.

172375407539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5556600, while the sum is 53.

The spelling of 172375407539 in words is "one hundred seventy-two billion, three hundred seventy-five million, four hundred seven thousand, five hundred thirty-nine".