12039518881 has 8 divisors (see below), whose sum is σ = 13728320424. Its totient is φ = 10459672320.

The previous prime is 12039518879. The next prime is 12039518921. The reversal of 12039518881 is 18881593021.

It can be written as a sum of positive squares in 4 ways, for example, as 1674446400 + 10365072481 = 40920^2 + 101809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12039518881 - 2¹ = 12039518879 is a prime.

It is a super-2 number, since 2×12039518881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12039518801) 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, 27238510 + ... + 27238951.

It is an arithmetic number, because the mean of its divisors is an integer number (1716040053).

Almost surely, 2^12039518881 is an apocalyptic number.

It is an amenable number.

12039518881 is a deficient number, since it is larger than the sum of its proper divisors (1688801543).

12039518881 is a wasteful number, since it uses less digits than its factorization.

12039518881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54477491.

The product of its (nonzero) digits is 138240, while the sum is 46.

The spelling of 12039518881 in words is "twelve billion, thirty-nine million, five hundred eighteen thousand, eight hundred eighty-one".