12161556362 has 8 divisors (see below), whose sum is σ = 18243125856. Its totient is φ = 6080514412.

The previous prime is 12161556361. The next prime is 12161556419. The reversal of 12161556362 is 26365516121.

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

It is a super-2 number, since 2×12161556362² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12161556361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68078 + ... + 170169.

It is an arithmetic number, because the mean of its divisors is an integer number (2280390732).

Almost surely, 2^12161556362 is an apocalyptic number.

12161556362 is a deficient number, since it is larger than the sum of its proper divisors (6081569494).

12161556362 is a wasteful number, since it uses less digits than its factorization.

12161556362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263772.

The product of its digits is 64800, while the sum is 38.

The spelling of 12161556362 in words is "twelve billion, one hundred sixty-one million, five hundred fifty-six thousand, three hundred sixty-two".