3660202756549 has 2 divisors, whose sum is σ = 3660202756550. Its totient is φ = 3660202756548.

The previous prime is 3660202756547. The next prime is 3660202756583. The reversal of 3660202756549 is 9456572020663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3384164952100 + 276037804449 = 1839610^2 + 525393^2 .

It is a cyclic number.

It is not a de Polignac number, because 3660202756549 - 2¹ = 3660202756547 is a prime.

Together with 3660202756547, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3660202756549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3660202756547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830101378274 + 1830101378275.

It is an arithmetic number, because the mean of its divisors is an integer number (1830101378275).

Almost surely, 2^{3660202756549} is an apocalyptic number.

It is an amenable number.

3660202756549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3660202756549 is an equidigital number, since it uses as much as digits as its factorization.

3660202756549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 3660202756549 in words is "three trillion, six hundred sixty billion, two hundred two million, seven hundred fifty-six thousand, five hundred forty-nine".