12154448751660 has 144 divisors (see below), whose sum is σ = 38261862396576. Its totient is φ = 3238823895552.

The previous prime is 12154448751647. The next prime is 12154448751689. The reversal of 12154448751660 is 6615784445121.

12154448751660 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 4 + 44 + 87 + 516 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 12154448751597 and 12154448751606.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 5762032 + ... + 7583528.

It is an arithmetic number, because the mean of its divisors is an integer number (265707377754).

Almost surely, 2^{12154448751660} is an apocalyptic number.

12154448751660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12154448751660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19130931198288).

12154448751660 is an abundant number, since it is smaller than the sum of its proper divisors (26107413644916).

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

12154448751660 is a wasteful number, since it uses less digits than its factorization.

12154448751660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822894 (or 1822880 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 12154448751660 in words is "twelve trillion, one hundred fifty-four billion, four hundred forty-eight million, seven hundred fifty-one thousand, six hundred sixty".