2166062521517 has 2 divisors, whose sum is σ = 2166062521518. Its totient is φ = 2166062521516.

The previous prime is 2166062521451. The next prime is 2166062521541. The reversal of 2166062521517 is 7151252606612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1926152603881 + 239909917636 = 1387859^2 + 489806^2 .

It is a cyclic number.

It is not a de Polignac number, because 2166062521517 - 2⁸ = 2166062521261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2166062521547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083031260758 + 1083031260759.

It is an arithmetic number, because the mean of its divisors is an integer number (1083031260759).

Almost surely, 2^{2166062521517} is an apocalyptic number.

It is an amenable number.

2166062521517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166062521517 is an equidigital number, since it uses as much as digits as its factorization.

2166062521517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 2166062521517 in words is "two trillion, one hundred sixty-six billion, sixty-two million, five hundred twenty-one thousand, five hundred seventeen".