12161247882 has 64 divisors (see below), whose sum is σ = 29973888000. Its totient is φ = 3211470720.

The previous prime is 12161247869. The next prime is 12161247883. The reversal of 12161247882 is 28874216121.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (12161247883) 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 31 ways as a sum of consecutive naturals, for example, 153132 + ... + 218567.

It is an arithmetic number, because the mean of its divisors is an integer number (468342000).

Almost surely, 2^12161247882 is an apocalyptic number.

12161247882 is an abundant number, since it is smaller than the sum of its proper divisors (17812640118).

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

12161247882 is a wasteful number, since it uses less digits than its factorization.

12161247882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371771.

The product of its digits is 86016, while the sum is 42.

The spelling of 12161247882 in words is "twelve billion, one hundred sixty-one million, two hundred forty-seven thousand, eight hundred eighty-two".