2111550161473 has 2 divisors, whose sum is σ = 2111550161474. Its totient is φ = 2111550161472.

The previous prime is 2111550161431. The next prime is 2111550161519. The reversal of 2111550161473 is 3741610551112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1431200683584 + 680349477889 = 1196328^2 + 824833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111550161473 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111550161173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055775080736 + 1055775080737.

It is an arithmetic number, because the mean of its divisors is an integer number (1055775080737).

Almost surely, 2^{2111550161473} is an apocalyptic number.

It is an amenable number.

2111550161473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111550161473 is an equidigital number, since it uses as much as digits as its factorization.

2111550161473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

The spelling of 2111550161473 in words is "two trillion, one hundred eleven billion, five hundred fifty million, one hundred sixty-one thousand, four hundred seventy-three".