12016778048658 has 32 divisors (see below), whose sum is σ = 26736959908800. Its totient is φ = 4000641379488.

The previous prime is 12016778048651. The next prime is 12016778048669. The reversal of 12016778048658 is 85684087761021.

It is a happy number.

12016778048658 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 6 + 77 + 80 + 486 + 5 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12016778048595 and 12016778048604.

It is not an unprimeable number, because it can be changed into a prime (12016778048651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137492116 + ... + 137579487.

It is an arithmetic number, because the mean of its divisors is an integer number (835529997150).

Almost surely, 2^{12016778048658} is an apocalyptic number.

12016778048658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12016778048658 is an abundant number, since it is smaller than the sum of its proper divisors (14720181860142).

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

12016778048658 is a wasteful number, since it uses less digits than its factorization.

12016778048658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275072423 (or 275072417 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 63.

The spelling of 12016778048658 in words is "twelve trillion, sixteen billion, seven hundred seventy-eight million, forty-eight thousand, six hundred fifty-eight".