1002002000977 has 2 divisors, whose sum is σ = 1002002000978. Its totient is φ = 1002002000976.

The previous prime is 1002002000933. The next prime is 1002002001023. The reversal of 1002002000977 is 7790002002001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 994535485696 + 7466515281 = 997264^2 + 86409^2 .

It is an emirp because it is prime and its reverse (7790002002001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002002000977 - 2³¹ = 999854517329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002002000777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501001000488 + 501001000489.

It is an arithmetic number, because the mean of its divisors is an integer number (501001000489).

Almost surely, 2^{1002002000977} is an apocalyptic number.

It is an amenable number.

1002002000977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002002000977 is an equidigital number, since it uses as much as digits as its factorization.

1002002000977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 28.

Adding to 1002002000977 its reverse (7790002002001), we get a palindrome (8792004002978).

The spelling of 1002002000977 in words is "one trillion, two billion, two million, nine hundred seventy-seven", and thus it is an aban number.