15166106561213 has 2 divisors, whose sum is σ = 15166106561214. Its totient is φ = 15166106561212.

The previous prime is 15166106561209. The next prime is 15166106561267. The reversal of 15166106561213 is 31216560166151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14143150304644 + 1022956256569 = 3760738^2 + 1011413^2 .

It is an emirp because it is prime and its reverse (31216560166151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15166106561213 - 2² = 15166106561209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15166106566213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7583053280606 + 7583053280607.

It is an arithmetic number, because the mean of its divisors is an integer number (7583053280607).

Almost surely, 2^{15166106561213} is an apocalyptic number.

It is an amenable number.

15166106561213 is a deficient number, since it is larger than the sum of its proper divisors (1).

15166106561213 is an equidigital number, since it uses as much as digits as its factorization.

15166106561213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 15166106561213 in words is "fifteen trillion, one hundred sixty-six billion, one hundred six million, five hundred sixty-one thousand, two hundred thirteen".