11821370538160 has 40 divisors (see below), whose sum is σ = 27496467769680. Its totient is φ = 4726521330432.

The previous prime is 11821370538137. The next prime is 11821370538161. The reversal of 11821370538160 is 6183507312811.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 11821370538160.

It is not an unprimeable number, because it can be changed into a prime (11821370538161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31482270 + ... + 31855549.

It is an arithmetic number, because the mean of its divisors is an integer number (687411694242).

Almost surely, 2^{11821370538160} is an apocalyptic number.

11821370538160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11821370538160 is an abundant number, since it is smaller than the sum of its proper divisors (15675097231520).

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

11821370538160 is a wasteful number, since it uses less digits than its factorization.

11821370538160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63340165 (or 63340159 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 11821370538160 in words is "eleven trillion, eight hundred twenty-one billion, three hundred seventy million, five hundred thirty-eight thousand, one hundred sixty".