12161064935880 has 256 divisors, whose sum is σ = 46634677862400. Its totient is φ = 2761263302400.

The previous prime is 12161064935869. The next prime is 12161064935923. The reversal of 12161064935880 is 8853946016121.

It is a happy number.

12161064935880 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 10 + 6 + 49 + 3 + 588 + 0 = 666.

It is a super-2 number, since 2×12161064935880² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4184952 + ... + 6468071.

It is an arithmetic number, because the mean of its divisors is an integer number (182166710400).

Almost surely, 2^{12161064935880} is an apocalyptic number.

12161064935880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12161064935880 is an abundant number, since it is smaller than the sum of its proper divisors (34473612926520).

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

12161064935880 is a wasteful number, since it uses less digits than its factorization.

12161064935880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10653201 (or 10653191 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 12161064935880 in words is "twelve trillion, one hundred sixty-one billion, sixty-four million, nine hundred thirty-five thousand, eight hundred eighty".