11100609980 has 24 divisors (see below), whose sum is σ = 23313585120. Its totient is φ = 4439805120.

The previous prime is 11100609979. The next prime is 11100610021. The reversal of 11100609980 is 8990600111.

It is a super-3 number, since 3×11100609980³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11100609980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246881 + ... + 288359.

It is an arithmetic number, because the mean of its divisors is an integer number (971399380).

Almost surely, 2^11100609980 is an apocalyptic number.

11100609980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100609980 is an abundant number, since it is smaller than the sum of its proper divisors (12212975140).

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

11100609980 is a wasteful number, since it uses less digits than its factorization.

11100609980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54869 (or 54867 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 11100609980 in words is "eleven billion, one hundred million, six hundred nine thousand, nine hundred eighty".