3666727915813 has 2 divisors, whose sum is σ = 3666727915814. Its totient is φ = 3666727915812.

The previous prime is 3666727915789. The next prime is 3666727915897. The reversal of 3666727915813 is 3185197276663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3655522211364 + 11205704449 = 1911942^2 + 105857^2 .

It is a cyclic number.

It is not a de Polignac number, because 3666727915813 - 2¹³ = 3666727907621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3666727918813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833363957906 + 1833363957907.

It is an arithmetic number, because the mean of its divisors is an integer number (1833363957907).

Almost surely, 2^{3666727915813} is an apocalyptic number.

It is an amenable number.

3666727915813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666727915813 is an equidigital number, since it uses as much as digits as its factorization.

3666727915813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68584320, while the sum is 64.

The spelling of 3666727915813 in words is "three trillion, six hundred sixty-six billion, seven hundred twenty-seven million, nine hundred fifteen thousand, eight hundred thirteen".