2161588214873 has 2 divisors, whose sum is σ = 2161588214874. Its totient is φ = 2161588214872.

The previous prime is 2161588214729. The next prime is 2161588214893. The reversal of 2161588214873 is 3784128851612.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1833445986304 + 328142228569 = 1354048^2 + 572837^2 .

It is a cyclic number.

It is not a de Polignac number, because 2161588214873 - 2¹² = 2161588210777 is a prime.

It is a super-2 number, since 2×2161588214873² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2161588214893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080794107436 + 1080794107437.

It is an arithmetic number, because the mean of its divisors is an integer number (1080794107437).

Almost surely, 2^{2161588214873} is an apocalyptic number.

It is an amenable number.

2161588214873 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161588214873 is an equidigital number, since it uses as much as digits as its factorization.

2161588214873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5160960, while the sum is 56.

The spelling of 2161588214873 in words is "two trillion, one hundred sixty-one billion, five hundred eighty-eight million, two hundred fourteen thousand, eight hundred seventy-three".