11856183870120 has 64 divisors (see below), whose sum is σ = 35569145200320. Its totient is φ = 3161596268544.

The previous prime is 11856183870079. The next prime is 11856183870127. The reversal of 11856183870120 is 2107838165811.

It is a happy number.

It is a super-2 number, since 2×11856183870120² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11856183870127) by changing a digit.

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, 6679467 + ... + 8266053.

It is an arithmetic number, because the mean of its divisors is an integer number (555767893755).

Almost surely, 2^{11856183870120} is an apocalyptic number.

11856183870120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11856183870120 is an abundant number, since it is smaller than the sum of its proper divisors (23712961330200).

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

11856183870120 is a wasteful number, since it uses less digits than its factorization.

11856183870120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648874 (or 1648870 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 51.

The spelling of 11856183870120 in words is "eleven trillion, eight hundred fifty-six billion, one hundred eighty-three million, eight hundred seventy thousand, one hundred twenty".