2164332225137 has 4 divisors (see below), whose sum is σ = 2217120816036. Its totient is φ = 2111543634240.

The previous prime is 2164332225119. The next prime is 2164332225173. The reversal of 2164332225137 is 7315222334612.

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 1055388437041 + 1108943788096 = 1027321^2 + 1053064^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164332225137 - 2⁶ = 2164332225073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 52788590857 = 2164332225137 / (2 + 1 + 6 + 4 + 3 + 3 + 2 + 2 + 2 + 5 + 1 + 3 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2164332225094 and 2164332225103.

It is not an unprimeable number, because it can be changed into a prime (2164332225337) 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, 26394295388 + ... + 26394295469.

It is an arithmetic number, because the mean of its divisors is an integer number (554280204009).

Almost surely, 2^{2164332225137} is an apocalyptic number.

It is an amenable number.

2164332225137 is a deficient number, since it is larger than the sum of its proper divisors (52788590899).

2164332225137 is an equidigital number, since it uses as much as digits as its factorization.

2164332225137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52788590898.

The product of its digits is 362880, while the sum is 41.

Adding to 2164332225137 its reverse (7315222334612), we get a palindrome (9479554559749).

The spelling of 2164332225137 in words is "two trillion, one hundred sixty-four billion, three hundred thirty-two million, two hundred twenty-five thousand, one hundred thirty-seven".