3366720339887 has 2 divisors, whose sum is σ = 3366720339888. Its totient is φ = 3366720339886.

The previous prime is 3366720339839. The next prime is 3366720339889. The reversal of 3366720339887 is 7889330276633.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3366720339887 - 2¹² = 3366720335791 is a prime.

It is a super-2 number, since 2×3366720339887² (a number of 26 digits) contains 22 as substring.

Together with 3366720339889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3366720339889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1683360169943 + 1683360169944.

It is an arithmetic number, because the mean of its divisors is an integer number (1683360169944).

Almost surely, 2^{3366720339887} is an apocalyptic number.

3366720339887 is a deficient number, since it is larger than the sum of its proper divisors (1).

3366720339887 is an equidigital number, since it uses as much as digits as its factorization.

3366720339887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164602368, while the sum is 65.

The spelling of 3366720339887 in words is "three trillion, three hundred sixty-six billion, seven hundred twenty million, three hundred thirty-nine thousand, eight hundred eighty-seven".