1064781800688 has 40 divisors (see below), whose sum is σ = 2750813342928. Its totient is φ = 354910876672.

The previous prime is 1064781800683. The next prime is 1064781800699. The reversal of 1064781800688 is 8860081874601.

It is a super-2 number, since 2×1064781800688² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064781800683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561256 + ... + 1563512.

Almost surely, 2^{1064781800688} is an apocalyptic number.

It is an amenable number.

1064781800688 is an abundant number, since it is smaller than the sum of its proper divisors (1686031542240).

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

1064781800688 is a wasteful number, since it uses less digits than its factorization.

1064781800688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024401 (or 1024395 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 57.

The spelling of 1064781800688 in words is "one trillion, sixty-four billion, seven hundred eighty-one million, eight hundred thousand, six hundred eighty-eight".