11661849140 has 24 divisors (see below), whose sum is σ = 24904968480. Its totient is φ = 4585675808.

The previous prime is 11661849113. The next prime is 11661849149. The reversal of 11661849140 is 4194816611.

11661849140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661849149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4940282 + ... + 4942641.

It is an arithmetic number, because the mean of its divisors is an integer number (1037707020).

Almost surely, 2^11661849140 is an apocalyptic number.

11661849140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11661849140 is an abundant number, since it is smaller than the sum of its proper divisors (13243119340).

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

11661849140 is a wasteful number, since it uses less digits than its factorization.

11661849140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9882991 (or 9882989 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 11661849140 in words is "eleven billion, six hundred sixty-one million, eight hundred forty-nine thousand, one hundred forty".