12167744452 has 12 divisors (see below), whose sum is σ = 21695318316. Its totient is φ = 5969082080.

The previous prime is 12167744411. The next prime is 12167744521. The reversal of 12167744452 is 25444776121.

It can be written as a sum of positive squares in 2 ways, for example, as 7952358976 + 4215385476 = 89176^2 + 64926^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12167744399 and 12167744408.

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, 28697299 + ... + 28697722.

It is an arithmetic number, because the mean of its divisors is an integer number (1807943193).

Almost surely, 2^12167744452 is an apocalyptic number.

It is an amenable number.

12167744452 is a deficient number, since it is larger than the sum of its proper divisors (9527573864).

12167744452 is a wasteful number, since it uses less digits than its factorization.

12167744452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57395078 (or 57395076 counting only the distinct ones).

The product of its digits is 376320, while the sum is 43.

The spelling of 12167744452 in words is "twelve billion, one hundred sixty-seven million, seven hundred forty-four thousand, four hundred fifty-two".