12161053655 has 8 divisors (see below), whose sum is σ = 14699785392. Its totient is φ = 9657828928.

The previous prime is 12161053637. The next prime is 12161053657. The reversal of 12161053655 is 55635016121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12161053655 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161053657) 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, 8875997 + ... + 8877366.

It is an arithmetic number, because the mean of its divisors is an integer number (1837473174).

Almost surely, 2^12161053655 is an apocalyptic number.

12161053655 is a deficient number, since it is larger than the sum of its proper divisors (2538731737).

12161053655 is a wasteful number, since it uses less digits than its factorization.

12161053655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17753505.

The product of its (nonzero) digits is 27000, while the sum is 35.

Adding to 12161053655 its reverse (55635016121), we get a palindrome (67796069776).

The spelling of 12161053655 in words is "twelve billion, one hundred sixty-one million, fifty-three thousand, six hundred fifty-five".