1288874974729 has 2 divisors, whose sum is σ = 1288874974730. Its totient is φ = 1288874974728.

The previous prime is 1288874974679. The next prime is 1288874974757. The reversal of 1288874974729 is 9274794788821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1273677016329 + 15197958400 = 1128573^2 + 123280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1288874974729 - 2²⁷ = 1288740757001 is a prime.

It is a super-2 number, since 2×1288874974729² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1288874974129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644437487364 + 644437487365.

It is an arithmetic number, because the mean of its divisors is an integer number (644437487365).

Almost surely, 2^{1288874974729} is an apocalyptic number.

It is an amenable number.

1288874974729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288874974729 is an equidigital number, since it uses as much as digits as its factorization.

1288874974729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 910393344, while the sum is 76.

The spelling of 1288874974729 in words is "one trillion, two hundred eighty-eight billion, eight hundred seventy-four million, nine hundred seventy-four thousand, seven hundred twenty-nine".