161275368944674 has 4 divisors (see below), whose sum is σ = 241913053417014. Its totient is φ = 80637684472336.

The previous prime is 161275368944597. The next prime is 161275368944783. The reversal of 161275368944674 is 476449863572161.

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

It can be written as a sum of positive squares in only one way, i.e., 127868760720649 + 33406608224025 = 11307907^2 + 5779845^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161275368944597 and 161275368944606.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40318842236167 + ... + 40318842236170.

Almost surely, 2^{161275368944674} is an apocalyptic number.

161275368944674 is a deficient number, since it is larger than the sum of its proper divisors (80637684472340).

161275368944674 is an equidigital number, since it uses as much as digits as its factorization.

161275368944674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80637684472339.

The product of its digits is 1463132160, while the sum is 73.

The spelling of 161275368944674 in words is "one hundred sixty-one trillion, two hundred seventy-five billion, three hundred sixty-eight million, nine hundred forty-four thousand, six hundred seventy-four".