66495286357 has 2 divisors, whose sum is σ = 66495286358. Its totient is φ = 66495286356.

The previous prime is 66495286343. The next prime is 66495286367. The reversal of 66495286357 is 75368259466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40098460516 + 26396825841 = 200246^2 + 162471^2 .

It is a cyclic number.

It is not a de Polignac number, because 66495286357 - 2¹¹ = 66495284309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66495286295 and 66495286304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66495286367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33247643178 + 33247643179.

It is an arithmetic number, because the mean of its divisors is an integer number (33247643179).

Almost surely, 2^66495286357 is an apocalyptic number.

It is an amenable number.

66495286357 is a deficient number, since it is larger than the sum of its proper divisors (1).

66495286357 is an equidigital number, since it uses as much as digits as its factorization.

66495286357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65318400, while the sum is 61.

The spelling of 66495286357 in words is "sixty-six billion, four hundred ninety-five million, two hundred eighty-six thousand, three hundred fifty-seven".