2166070072739 has 2 divisors, whose sum is σ = 2166070072740. Its totient is φ = 2166070072738.

The previous prime is 2166070072679. The next prime is 2166070072783. The reversal of 2166070072739 is 9372700706612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2166070072739 - 2⁸ = 2166070072483 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2166070072039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083035036369 + 1083035036370.

It is an arithmetic number, because the mean of its divisors is an integer number (1083035036370).

Almost surely, 2^{2166070072739} is an apocalyptic number.

2166070072739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166070072739 is an equidigital number, since it uses as much as digits as its factorization.

2166070072739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1333584, while the sum is 50.

The spelling of 2166070072739 in words is "two trillion, one hundred sixty-six billion, seventy million, seventy-two thousand, seven hundred thirty-nine".