11011009880 has 64 divisors (see below), whose sum is σ = 27840576960. Its totient is φ = 3888834048.

The previous prime is 11011009879. The next prime is 11011009951. The reversal of 11011009880 is 8890011011.

It is a super-2 number, since 2×11011009880² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448367 + ... + 472286.

It is an arithmetic number, because the mean of its divisors is an integer number (435009015).

Almost surely, 2^11011009880 is an apocalyptic number.

11011009880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011009880 is an abundant number, since it is smaller than the sum of its proper divisors (16829567080).

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

11011009880 is a wasteful number, since it uses less digits than its factorization.

11011009880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920700 (or 920696 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 29.

The spelling of 11011009880 in words is "eleven billion, eleven million, nine thousand, eight hundred eighty".