11603504660 has 48 divisors (see below), whose sum is σ = 26656801920. Its totient is φ = 4207674240.

The previous prime is 11603504659. The next prime is 11603504677. The reversal of 11603504660 is 6640530611.

It is a super-3 number, since 3×11603504660³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5522 + ... + 152438.

It is an arithmetic number, because the mean of its divisors is an integer number (555350040).

Almost surely, 2^11603504660 is an apocalyptic number.

11603504660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11603504660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13328400960).

11603504660 is an abundant number, since it is smaller than the sum of its proper divisors (15053297260).

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

11603504660 is a wasteful number, since it uses less digits than its factorization.

11603504660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147296 (or 147294 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 11603504660 in words is "eleven billion, six hundred three million, five hundred four thousand, six hundred sixty".