1047765148817 has 4 divisors (see below), whose sum is σ = 1051341139380. Its totient is φ = 1044189158256.

The previous prime is 1047765148811. The next prime is 1047765148847. The reversal of 1047765148817 is 7188415677401.

It is a Cunningham number, because it is equal to 1023604²+1.

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 991330870336 + 56434278481 = 995656^2 + 237559^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047765148817 - 2¹⁴ = 1047765132433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1047765148811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1787994842 + ... + 1787995427.

It is an arithmetic number, because the mean of its divisors is an integer number (262835284845).

Almost surely, 2^{1047765148817} is an apocalyptic number.

It is an amenable number.

1047765148817 is a deficient number, since it is larger than the sum of its proper divisors (3575990563).

1047765148817 is an equidigital number, since it uses as much as digits as its factorization.

1047765148817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575990562.

The product of its (nonzero) digits is 10536960, while the sum is 59.

The spelling of 1047765148817 in words is "one trillion, forty-seven billion, seven hundred sixty-five million, one hundred forty-eight thousand, eight hundred seventeen".