11603544340 has 48 divisors (see below), whose sum is σ = 25659990720. Its totient is φ = 4395409920.

The previous prime is 11603544317. The next prime is 11603544349. The reversal of 11603544340 is 4344530611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11603544349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1398444 + ... + 1406716.

It is an arithmetic number, because the mean of its divisors is an integer number (534583140).

Almost surely, 2^11603544340 is an apocalyptic number.

11603544340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11603544340 is an abundant number, since it is smaller than the sum of its proper divisors (14056446380).

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

11603544340 is a wasteful number, since it uses less digits than its factorization.

11603544340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11992 (or 11990 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 11603544340 in words is "eleven billion, six hundred three million, five hundred forty-four thousand, three hundred forty".