1089209009900 has 72 divisors (see below), whose sum is σ = 2578632623616. Its totient is φ = 396048686400.

The previous prime is 1089209009897. The next prime is 1089209009929. The reversal of 1089209009900 is 99009029801.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22951997 + ... + 22999403.

Almost surely, 2^{1089209009900} is an apocalyptic number.

1089209009900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1089209009900 is an abundant number, since it is smaller than the sum of its proper divisors (1489423613716).

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

1089209009900 is a wasteful number, since it uses less digits than its factorization.

1089209009900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68319 (or 68312 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 47.

The spelling of 1089209009900 in words is "one trillion, eighty-nine billion, two hundred nine million, nine thousand, nine hundred".