66495352901 has 2 divisors, whose sum is σ = 66495352902. Its totient is φ = 66495352900.

The previous prime is 66495352879. The next prime is 66495352939. The reversal of 66495352901 is 10925359466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57432122500 + 9063230401 = 239650^2 + 95201^2 .

It is a cyclic number.

It is not a de Polignac number, because 66495352901 - 2¹⁰ = 66495351877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66495352901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66495352801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33247676450 + 33247676451.

It is an arithmetic number, because the mean of its divisors is an integer number (33247676451).

Almost surely, 2^66495352901 is an apocalyptic number.

It is an amenable number.

66495352901 is a deficient number, since it is larger than the sum of its proper divisors (1).

66495352901 is an equidigital number, since it uses as much as digits as its factorization.

66495352901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The spelling of 66495352901 in words is "sixty-six billion, four hundred ninety-five million, three hundred fifty-two thousand, nine hundred one".