66031189497353 has 2 divisors, whose sum is σ = 66031189497354. Its totient is φ = 66031189497352.

The previous prime is 66031189497269. The next prime is 66031189497461. The reversal of 66031189497353 is 35379498113066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60297042023689 + 5734147473664 = 7765117^2 + 2394608^2 .

It is a cyclic number.

It is not a de Polignac number, because 66031189497353 - 2²⁰ = 66031188448777 is a prime.

It is a super-2 number, since 2×66031189497353² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66031189497353.

It is not a weakly prime, because it can be changed into another prime (66031189497953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33015594748676 + 33015594748677.

It is an arithmetic number, because the mean of its divisors is an integer number (33015594748677).

Almost surely, 2^{66031189497353} is an apocalyptic number.

It is an amenable number.

66031189497353 is a deficient number, since it is larger than the sum of its proper divisors (1).

66031189497353 is an equidigital number, since it uses as much as digits as its factorization.

66031189497353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88179840, while the sum is 65.

The spelling of 66031189497353 in words is "sixty-six trillion, thirty-one billion, one hundred eighty-nine million, four hundred ninety-seven thousand, three hundred fifty-three".