1173161785448 has 8 divisors (see below), whose sum is σ = 2199678347730. Its totient is φ = 586580892720.

The previous prime is 1173161785423. The next prime is 1173161785507. The reversal of 1173161785448 is 8445871613711.

It can be written as a sum of positive squares in only one way, i.e., 873473421604 + 299688363844 = 934598^2 + 547438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1173161785393 and 1173161785402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73322611583 + ... + 73322611598.

Almost surely, 2^{1173161785448} is an apocalyptic number.

It is an amenable number.

1173161785448 is a deficient number, since it is larger than the sum of its proper divisors (1026516562282).

1173161785448 is a wasteful number, since it uses less digits than its factorization.

1173161785448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146645223187 (or 146645223183 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 56.

The spelling of 1173161785448 in words is "one trillion, one hundred seventy-three billion, one hundred sixty-one million, seven hundred eighty-five thousand, four hundred forty-eight".