11009659880 has 16 divisors (see below), whose sum is σ = 24771734820. Its totient is φ = 4403863936.

The previous prime is 11009659879. The next prime is 11009659891. The reversal of 11009659880 is 8895690011.

It can be written as a sum of positive squares in 2 ways, for example, as 10486988836 + 522671044 = 102406^2 + 22862^2 .

It is a super-2 number, since 2×11009659880² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137620709 + ... + 137620788.

Almost surely, 2^11009659880 is an apocalyptic number.

11009659880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11009659880 is an abundant number, since it is smaller than the sum of its proper divisors (13762074940).

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

11009659880 is a wasteful number, since it uses less digits than its factorization.

11009659880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275241508 (or 275241504 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 47.

The spelling of 11009659880 in words is "eleven billion, nine million, six hundred fifty-nine thousand, eight hundred eighty".