11605688340 has 24 divisors (see below), whose sum is σ = 32495927520. Its totient is φ = 3094850208.

The previous prime is 11605688249. The next prime is 11605688359. The reversal of 11605688340 is 4388650611.

It is a junction number, because it is equal to n+sod(n) for n = 11605688292 and 11605688301.

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, 96714010 + ... + 96714129.

It is an arithmetic number, because the mean of its divisors is an integer number (1353996980).

Almost surely, 2^11605688340 is an apocalyptic number.

11605688340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11605688340 is an abundant number, since it is smaller than the sum of its proper divisors (20890239180).

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

11605688340 is a wasteful number, since it uses less digits than its factorization.

11605688340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193428151 (or 193428149 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 11605688340 in words is "eleven billion, six hundred five million, six hundred eighty-eight thousand, three hundred forty".