1026659986664 has 32 divisors (see below), whose sum is σ = 2073105680520. Its totient is φ = 473833414656.

The previous prime is 1026659986631. The next prime is 1026659986711. The reversal of 1026659986664 is 4666899566201.

1026659986664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 330199636900 + 696460349764 = 574630^2 + 834542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1026659986594 and 1026659986603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8772824 + ... + 8889080.

Almost surely, 2^{1026659986664} is an apocalyptic number.

It is an amenable number.

1026659986664 is an abundant number, since it is smaller than the sum of its proper divisors (1046445693856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1026659986664 is a wasteful number, since it uses less digits than its factorization.

1026659986664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201189 (or 201185 counting only the distinct ones).

The product of its (nonzero) digits is 201553920, while the sum is 68.

The spelling of 1026659986664 in words is "one trillion, twenty-six billion, six hundred fifty-nine million, nine hundred eighty-six thousand, six hundred sixty-four".