1001111775773 has 2 divisors, whose sum is σ = 1001111775774. Its totient is φ = 1001111775772.

The previous prime is 1001111775767. The next prime is 1001111775821. The reversal of 1001111775773 is 3775771111001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 751234760644 + 249877015129 = 866738^2 + 499877^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001111775773 - 2²² = 1001107581469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001111775773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001111775173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500555887886 + 500555887887.

It is an arithmetic number, because the mean of its divisors is an integer number (500555887887).

Almost surely, 2^{1001111775773} is an apocalyptic number.

It is an amenable number.

1001111775773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001111775773 is an equidigital number, since it uses as much as digits as its factorization.

1001111775773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36015, while the sum is 41.

Adding to 1001111775773 its reverse (3775771111001), we get a palindrome (4776882886774).

The spelling of 1001111775773 in words is "one trillion, one billion, one hundred eleven million, seven hundred seventy-five thousand, seven hundred seventy-three".