8120196019745 has 8 divisors (see below), whose sum is σ = 9745002743784. Its totient is φ = 6495645135744.

The previous prime is 8120196019717. The next prime is 8120196019751. The reversal of 8120196019745 is 5479106910218.

It can be written as a sum of positive squares in 4 ways, for example, as 70849662976 + 8049346356769 = 266176^2 + 2837137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8120196019745 - 2¹⁸ = 8120195757601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63890174 + ... + 64017143.

It is an arithmetic number, because the mean of its divisors is an integer number (1218125342973).

Almost surely, 2^{8120196019745} is an apocalyptic number.

It is an amenable number.

8120196019745 is a deficient number, since it is larger than the sum of its proper divisors (1624806724039).

8120196019745 is a wasteful number, since it uses less digits than its factorization.

8120196019745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127920019.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 8120196019745 in words is "eight trillion, one hundred twenty billion, one hundred ninety-six million, nineteen thousand, seven hundred forty-five".