2173627631161 has 4 divisors (see below), whose sum is σ = 2484145864192. Its totient is φ = 1863109398132.

The previous prime is 2173627631101. The next prime is 2173627631221. The reversal of 2173627631161 is 1611367263712.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2173627631101) and next prime (2173627631221).

It is a cyclic number.

It is not a de Polignac number, because 2173627631161 - 2⁹ = 2173627630649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2173627631101) 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, 155259116505 + ... + 155259116518.

It is an arithmetic number, because the mean of its divisors is an integer number (621036466048).

Almost surely, 2^{2173627631161} is an apocalyptic number.

It is an amenable number.

2173627631161 is a deficient number, since it is larger than the sum of its proper divisors (310518233031).

2173627631161 is an equidigital number, since it uses as much as digits as its factorization.

2173627631161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310518233030.

The product of its digits is 381024, while the sum is 46.

The spelling of 2173627631161 in words is "two trillion, one hundred seventy-three billion, six hundred twenty-seven million, six hundred thirty-one thousand, one hundred sixty-one".