2116430504065 has 4 divisors (see below), whose sum is σ = 2539716604884. Its totient is φ = 1693144403248.

The previous prime is 2116430504057. The next prime is 2116430504093. The reversal of 2116430504065 is 5604050346112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1488539083249 + 627891420816 = 1220057^2 + 792396^2 .

It is a cyclic number.

It is not a de Polignac number, because 2116430504065 - 2³ = 2116430504057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 211643050402 + ... + 211643050411.

It is an arithmetic number, because the mean of its divisors is an integer number (634929151221).

Almost surely, 2^{2116430504065} is an apocalyptic number.

It is an amenable number.

2116430504065 is a deficient number, since it is larger than the sum of its proper divisors (423286100819).

2116430504065 is an equidigital number, since it uses as much as digits as its factorization.

2116430504065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423286100818.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 2116430504065 in words is "two trillion, one hundred sixteen billion, four hundred thirty million, five hundred four thousand, sixty-five".