1026659986663 has 16 divisors (see below), whose sum is σ = 1039490734464. Its totient is φ = 1013883469600.

The previous prime is 1026659986631. The next prime is 1026659986711. The reversal of 1026659986663 is 3666899566201.

It is a cyclic number.

It is not a de Polignac number, because 1026659986663 - 2⁵ = 1026659986631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026659986063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214465956 + ... + 214470742.

It is an arithmetic number, because the mean of its divisors is an integer number (64968170904).

Almost surely, 2^{1026659986663} is an apocalyptic number.

1026659986663 is a deficient number, since it is larger than the sum of its proper divisors (12830747801).

1026659986663 is a wasteful number, since it uses less digits than its factorization.

1026659986663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9902.

The product of its (nonzero) digits is 151165440, while the sum is 67.

The spelling of 1026659986663 in words is "one trillion, twenty-six billion, six hundred fifty-nine million, nine hundred eighty-six thousand, six hundred sixty-three".