1047198170945 has 4 divisors (see below), whose sum is σ = 1256637805140. Its totient is φ = 837758536752.

The previous prime is 1047198170917. The next prime is 1047198170959. The reversal of 1047198170945 is 5490718917401.

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 108549163024 + 938649007921 = 329468^2 + 968839^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047198170945 - 2⁶ = 1047198170881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104719817090 + ... + 104719817099.

It is an arithmetic number, because the mean of its divisors is an integer number (314159451285).

Almost surely, 2^{1047198170945} is an apocalyptic number.

It is an amenable number.

1047198170945 is a deficient number, since it is larger than the sum of its proper divisors (209439634195).

1047198170945 is an equidigital number, since it uses as much as digits as its factorization.

1047198170945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209439634194.

The product of its (nonzero) digits is 2540160, while the sum is 56.

The spelling of 1047198170945 in words is "one trillion, forty-seven billion, one hundred ninety-eight million, one hundred seventy thousand, nine hundred forty-five".