1001010111977 has 2 divisors, whose sum is σ = 1001010111978. Its totient is φ = 1001010111976.

The previous prime is 1001010111973. The next prime is 1001010112007. The reversal of 1001010111977 is 7791110101001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 991277105641 + 9733006336 = 995629^2 + 98656^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001010111977 - 2² = 1001010111973 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001010111973) 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, 500505055988 + 500505055989.

It is an arithmetic number, because the mean of its divisors is an integer number (500505055989).

Almost surely, 2^{1001010111977} is an apocalyptic number.

It is an amenable number.

1001010111977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001010111977 is an equidigital number, since it uses as much as digits as its factorization.

1001010111977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 441, while the sum is 29.

Adding to 1001010111977 its reverse (7791110101001), we get a palindrome (8792120212978).

The spelling of 1001010111977 in words is "one trillion, one billion, ten million, one hundred eleven thousand, nine hundred seventy-seven".