1099880690388 has 12 divisors (see below), whose sum is σ = 2566388277600. Its totient is φ = 366626896792.

The previous prime is 1099880690387. The next prime is 1099880690407. The reversal of 1099880690388 is 8830960889901.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099880690387) 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, 45828362088 + ... + 45828362111.

It is an arithmetic number, because the mean of its divisors is an integer number (213865689800).

Almost surely, 2^{1099880690388} is an apocalyptic number.

It is an amenable number.

1099880690388 is an abundant number, since it is smaller than the sum of its proper divisors (1466507587212).

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

1099880690388 is a wasteful number, since it uses less digits than its factorization.

1099880690388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91656724206 (or 91656724204 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 69.

The spelling of 1099880690388 in words is "one trillion, ninety-nine billion, eight hundred eighty million, six hundred ninety thousand, three hundred eighty-eight".