366668668517 has 4 divisors (see below), whose sum is σ = 366769488396. Its totient is φ = 366567848640.

The previous prime is 366668668511. The next prime is 366668668523. The reversal of 366668668517 is 715866866663.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (366668668511) and next prime (366668668523).

It can be written as a sum of positive squares in 2 ways, for example, as 208959608641 + 157709059876 = 457121^2 + 397126^2 .

It is a cyclic number.

It is not a de Polignac number, because 366668668517 - 2³⁴ = 349488799333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366668668511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50404484 + ... + 50411757.

It is an arithmetic number, because the mean of its divisors is an integer number (91692372099).

Almost surely, 2^366668668517 is an apocalyptic number.

It is an amenable number.

366668668517 is a deficient number, since it is larger than the sum of its proper divisors (100819879).

366668668517 is a wasteful number, since it uses less digits than its factorization.

366668668517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100819878.

The product of its digits is 313528320, while the sum is 68.

The spelling of 366668668517 in words is "three hundred sixty-six billion, six hundred sixty-eight million, six hundred sixty-eight thousand, five hundred seventeen".