1002765640633 has 2 divisors, whose sum is σ = 1002765640634. Its totient is φ = 1002765640632.

The previous prime is 1002765640621. The next prime is 1002765640729. The reversal of 1002765640633 is 3360465672001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 607794870544 + 394970770089 = 779612^2 + 628467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002765640633 is a prime.

It is a super-2 number, since 2×1002765640633² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1002765640633.

It is not a weakly prime, because it can be changed into another prime (1002765640433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501382820316 + 501382820317.

It is an arithmetic number, because the mean of its divisors is an integer number (501382820317).

Almost surely, 2^{1002765640633} is an apocalyptic number.

It is an amenable number.

1002765640633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002765640633 is an equidigital number, since it uses as much as digits as its factorization.

1002765640633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 1002765640633 in words is "one trillion, two billion, seven hundred sixty-five million, six hundred forty thousand, six hundred thirty-three".