1000646899929 has 24 divisors (see below), whose sum is σ = 1447086218760. Its totient is φ = 666310394112.

The previous prime is 1000646899907. The next prime is 1000646899943. The reversal of 1000646899929 is 9299986460001.

It can be written as a sum of positive squares in 4 ways, for example, as 354230899929 + 646416000000 = 595173^2 + 804000^2 .

It is not a de Polignac number, because 1000646899929 - 2³¹ = 998499416281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000646199929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27783157 + ... + 27819149.

It is an arithmetic number, because the mean of its divisors is an integer number (60295259115).

Almost surely, 2^{1000646899929} is an apocalyptic number.

It is an amenable number.

1000646899929 is a deficient number, since it is larger than the sum of its proper divisors (446439318831).

1000646899929 is a wasteful number, since it uses less digits than its factorization.

1000646899929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39561 (or 39558 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 63.

The spelling of 1000646899929 in words is "one trillion, six hundred forty-six million, eight hundred ninety-nine thousand, nine hundred twenty-nine".