1177661317783 has 2 divisors, whose sum is σ = 1177661317784. Its totient is φ = 1177661317782.

The previous prime is 1177661317751. The next prime is 1177661317829. The reversal of 1177661317783 is 3877131667711.

It is a weak prime.

It is an emirp because it is prime and its reverse (3877131667711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1177661317783 - 2⁵ = 1177661317751 is a prime.

It is a super-2 number, since 2×1177661317783² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1177661317883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 588830658891 + 588830658892.

It is an arithmetic number, because the mean of its divisors is an integer number (588830658892).

Almost surely, 2^{1177661317783} is an apocalyptic number.

1177661317783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1177661317783 is an equidigital number, since it uses as much as digits as its factorization.

1177661317783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6223392, while the sum is 58.

The spelling of 1177661317783 in words is "one trillion, one hundred seventy-seven billion, six hundred sixty-one million, three hundred seventeen thousand, seven hundred eighty-three".