6660038046757 has 2 divisors, whose sum is σ = 6660038046758. Its totient is φ = 6660038046756.

The previous prime is 6660038046707. The next prime is 6660038046763. The reversal of 6660038046757 is 7576408300666.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5724960650721 + 935077396036 = 2392689^2 + 966994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6660038046757 is a prime.

It is a super-2 number, since 2×6660038046757² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6660038046707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330019023378 + 3330019023379.

It is an arithmetic number, because the mean of its divisors is an integer number (3330019023379).

Almost surely, 2^{6660038046757} is an apocalyptic number.

It is an amenable number.

6660038046757 is a deficient number, since it is larger than the sum of its proper divisors (1).

6660038046757 is an equidigital number, since it uses as much as digits as its factorization.

6660038046757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 58.

The spelling of 6660038046757 in words is "six trillion, six hundred sixty billion, thirty-eight million, forty-six thousand, seven hundred fifty-seven".