1004557611779 has 2 divisors, whose sum is σ = 1004557611780. Its totient is φ = 1004557611778.

The previous prime is 1004557611773. The next prime is 1004557611817. The reversal of 1004557611779 is 9771167554001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1004557611779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1004557611779.

It is not a weakly prime, because it can be changed into another prime (1004557611773) by changing a digit.

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 as a sum of consecutive naturals, namely, 502278805889 + 502278805890.

It is an arithmetic number, because the mean of its divisors is an integer number (502278805890).

Almost surely, 2^{1004557611779} is an apocalyptic number.

1004557611779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004557611779 is an equidigital number, since it uses as much as digits as its factorization.

1004557611779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1852200, while the sum is 53.

The spelling of 1004557611779 in words is "one trillion, four billion, five hundred fifty-seven million, six hundred eleven thousand, seven hundred seventy-nine".