12162621647 has 8 divisors (see below), whose sum is σ = 13274976000. Its totient is φ = 11051377560.

The previous prime is 12162621643. The next prime is 12162621781. The reversal of 12162621647 is 74612626121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12162621647 - 2² = 12162621643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12162621647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12162621643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254573 + ... + 298550.

It is an arithmetic number, because the mean of its divisors is an integer number (1659372000).

Almost surely, 2^12162621647 is an apocalyptic number.

12162621647 is a deficient number, since it is larger than the sum of its proper divisors (1112354353).

12162621647 is a wasteful number, since it uses less digits than its factorization.

12162621647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555133.

The product of its digits is 48384, while the sum is 38.

The spelling of 12162621647 in words is "twelve billion, one hundred sixty-two million, six hundred twenty-one thousand, six hundred forty-seven".