65652666377 has 2 divisors, whose sum is σ = 65652666378. Its totient is φ = 65652666376.

The previous prime is 65652666371. The next prime is 65652666397. The reversal of 65652666377 is 77366625656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35202765376 + 30449901001 = 187624^2 + 174499^2 .

It is a cyclic number.

It is not a de Polignac number, because 65652666377 - 2²⁸ = 65384230921 is a prime.

It is a super-2 number, since 2×65652666377² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65652666371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32826333188 + 32826333189.

It is an arithmetic number, because the mean of its divisors is an integer number (32826333189).

Almost surely, 2^65652666377 is an apocalyptic number.

It is an amenable number.

65652666377 is a deficient number, since it is larger than the sum of its proper divisors (1).

65652666377 is an equidigital number, since it uses as much as digits as its factorization.

65652666377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57153600, while the sum is 59.

The spelling of 65652666377 in words is "sixty-five billion, six hundred fifty-two million, six hundred sixty-six thousand, three hundred seventy-seven".