2166072515053 has 2 divisors, whose sum is σ = 2166072515054. Its totient is φ = 2166072515052.

The previous prime is 2166072515027. The next prime is 2166072515099. The reversal of 2166072515053 is 3505152706612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2092356464004 + 73716051049 = 1446498^2 + 271507^2 .

It is a cyclic number.

It is not a de Polignac number, because 2166072515053 - 2⁵ = 2166072515021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2166072515753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083036257526 + 1083036257527.

It is an arithmetic number, because the mean of its divisors is an integer number (1083036257527).

Almost surely, 2^{2166072515053} is an apocalyptic number.

It is an amenable number.

2166072515053 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166072515053 is an equidigital number, since it uses as much as digits as its factorization.

2166072515053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 2166072515053 in words is "two trillion, one hundred sixty-six billion, seventy-two million, five hundred fifteen thousand, fifty-three".