2116610522641 has 4 divisors (see below), whose sum is σ = 2156546570292. Its totient is φ = 2076674474992.

The previous prime is 2116610522597. The next prime is 2116610522681. The reversal of 2116610522641 is 1462250166112.

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 1780100313616 + 336510209025 = 1334204^2 + 580095^2 .

It is not a de Polignac number, because 2116610522641 - 2¹³ = 2116610514449 is a prime.

It is a super-2 number, since 2×2116610522641² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2116610522641.

It is not an unprimeable number, because it can be changed into a prime (2116610522681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19968023746 + ... + 19968023851.

It is an arithmetic number, because the mean of its divisors is an integer number (539136642573).

Almost surely, 2^{2116610522641} is an apocalyptic number.

It is an amenable number.

2116610522641 is a deficient number, since it is larger than the sum of its proper divisors (39936047651).

2116610522641 is an equidigital number, since it uses as much as digits as its factorization.

2116610522641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39936047650.

The product of its (nonzero) digits is 34560, while the sum is 37.

Adding to 2116610522641 its reverse (1462250166112), we get a palindrome (3578860688753).

The spelling of 2116610522641 in words is "two trillion, one hundred sixteen billion, six hundred ten million, five hundred twenty-two thousand, six hundred forty-one".