12161736650400 has 144 divisors (see below), whose sum is σ = 39949632122400. Its totient is φ = 3213376220160.

The previous prime is 12161736650389. The next prime is 12161736650417. The reversal of 12161736650400 is 405663716121.

It is a super-2 number, since 2×12161736650400² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22983310 + ... + 23506509.

It is an arithmetic number, because the mean of its divisors is an integer number (277428000850).

Almost surely, 2^{12161736650400} is an apocalyptic number.

12161736650400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12161736650400 is an abundant number, since it is smaller than the sum of its proper divisors (27787895472000).

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

12161736650400 is a wasteful number, since it uses less digits than its factorization.

12161736650400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46489951 (or 46489938 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 12161736650400 in words is "twelve trillion, one hundred sixty-one billion, seven hundred thirty-six million, six hundred fifty thousand, four hundred".