12154149768388 has 6 divisors (see below), whose sum is σ = 21269762094686. Its totient is φ = 6077074884192.

The previous prime is 12154149768361. The next prime is 12154149768389. The reversal of 12154149768388 is 88386794145121.

It can be written as a sum of positive squares in only one way, i.e., 7922209588164 + 4231940180224 = 2814642^2 + 2057168^2 .

It is not an unprimeable number, because it can be changed into a prime (12154149768389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1519268721045 + ... + 1519268721052.

Almost surely, 2^{12154149768388} is an apocalyptic number.

It is an amenable number.

12154149768388 is a deficient number, since it is larger than the sum of its proper divisors (9115612326298).

12154149768388 is a wasteful number, since it uses less digits than its factorization.

12154149768388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038537442101 (or 3038537442099 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 67.

The spelling of 12154149768388 in words is "twelve trillion, one hundred fifty-four billion, one hundred forty-nine million, seven hundred sixty-eight thousand, three hundred eighty-eight".