12040135056 has 80 divisors (see below), whose sum is σ = 34648972800. Its totient is φ = 4003005312.

The previous prime is 12040135031. The next prime is 12040135087. The reversal of 12040135056 is 65053104021.

It is a super-3 number, since 3×12040135056³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132225 + ... + 203871.

It is an arithmetic number, because the mean of its divisors is an integer number (433112160).

Almost surely, 2^12040135056 is an apocalyptic number.

12040135056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12040135056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17324486400).

12040135056 is an abundant number, since it is smaller than the sum of its proper divisors (22608837744).

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

12040135056 is a wasteful number, since it uses less digits than its factorization.

12040135056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72053 (or 72041 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 12040135056 its reverse (65053104021), we get a palindrome (77093239077).

The spelling of 12040135056 in words is "twelve billion, forty million, one hundred thirty-five thousand, fifty-six".