12145036648 has 16 divisors (see below), whose sum is σ = 22774272480. Its totient is φ = 6071897328.

The previous prime is 12145036613. The next prime is 12145036649. The reversal of 12145036648 is 84663054121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12145036648.

It is not an unprimeable number, because it can be changed into a prime (12145036649) 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, 11515 + ... + 156277.

It is an arithmetic number, because the mean of its divisors is an integer number (1423392030).

Almost surely, 2^12145036648 is an apocalyptic number.

It is an amenable number.

12145036648 is a deficient number, since it is larger than the sum of its proper divisors (10629235832).

12145036648 is a wasteful number, since it uses less digits than its factorization.

12145036648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155256 (or 155252 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 12145036648 in words is "twelve billion, one hundred forty-five million, thirty-six thousand, six hundred forty-eight".