1167583821779 has 2 divisors, whose sum is σ = 1167583821780. Its totient is φ = 1167583821778.

The previous prime is 1167583821773. The next prime is 1167583821853. The reversal of 1167583821779 is 9771283857611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1167583821779 - 2¹² = 1167583817683 is a prime.

It is not a weakly prime, because it can be changed into another prime (1167583821773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583791910889 + 583791910890.

It is an arithmetic number, because the mean of its divisors is an integer number (583791910890).

Almost surely, 2^{1167583821779} is an apocalyptic number.

1167583821779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1167583821779 is an equidigital number, since it uses as much as digits as its factorization.

1167583821779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 65.

The spelling of 1167583821779 in words is "one trillion, one hundred sixty-seven billion, five hundred eighty-three million, eight hundred twenty-one thousand, seven hundred seventy-nine".