12169290418 has 8 divisors (see below), whose sum is σ = 18263384748. Its totient is φ = 6081495504.

The previous prime is 12169290389. The next prime is 12169290437. The reversal of 12169290418 is 81409296121.

It can be written as a sum of positive squares in 2 ways, for example, as 11521231569 + 648058849 = 107337^2 + 25457^2 .

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

It is a super-2 number, since 2×12169290418² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1570021 + ... + 1577752.

Almost surely, 2^12169290418 is an apocalyptic number.

12169290418 is a deficient number, since it is larger than the sum of its proper divisors (6094094330).

12169290418 is a wasteful number, since it uses less digits than its factorization.

12169290418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149708.

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 12169290418 in words is "twelve billion, one hundred sixty-nine million, two hundred ninety thousand, four hundred eighteen".