1109398888688 has 20 divisors (see below), whose sum is σ = 2150378599848. Its totient is φ = 554462475840.

The previous prime is 1109398888681. The next prime is 1109398888709. The reversal of 1109398888688 is 8868888939011.

It is a super-2 number, since 2×1109398888688² (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 (1109398888681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14771906 + ... + 14846817.

Almost surely, 2^{1109398888688} is an apocalyptic number.

It is an amenable number.

1109398888688 is a deficient number, since it is larger than the sum of its proper divisors (1040979711160).

1109398888688 is a wasteful number, since it uses less digits than its factorization.

1109398888688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29621072 (or 29621066 counting only the distinct ones).

The product of its (nonzero) digits is 382205952, while the sum is 77.

The spelling of 1109398888688 in words is "one trillion, one hundred nine billion, three hundred ninety-eight million, eight hundred eighty-eight thousand, six hundred eighty-eight".