6373521632161 has 4 divisors (see below), whose sum is σ = 6383163874324. Its totient is φ = 6363879390000.

The previous prime is 6373521632143. The next prime is 6373521632249. The reversal of 6373521632161 is 1612361253736.

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 5110244542225 + 1263277089936 = 2260585^2 + 1123956^2 .

It is a cyclic number.

It is not a de Polignac number, because 6373521632161 - 2¹⁹ = 6373521107873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6373521632461) 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, 4821120090 + ... + 4821121411.

It is an arithmetic number, because the mean of its divisors is an integer number (1595790968581).

Almost surely, 2^{6373521632161} is an apocalyptic number.

It is an amenable number.

6373521632161 is a deficient number, since it is larger than the sum of its proper divisors (9642242163).

6373521632161 is an equidigital number, since it uses as much as digits as its factorization.

6373521632161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9642242162.

The product of its digits is 816480, while the sum is 46.

Adding to 6373521632161 its reverse (1612361253736), we get a palindrome (7985882885897).

The spelling of 6373521632161 in words is "six trillion, three hundred seventy-three billion, five hundred twenty-one million, six hundred thirty-two thousand, one hundred sixty-one".