12615000278949 has 12 divisors (see below), whose sum is σ = 18221719737312. Its totient is φ = 8409975877800.

The previous prime is 12615000278869. The next prime is 12615000278981. The reversal of 12615000278949 is 94987200051621.

It is a happy number.

12615000278949 is a `hidden beast` number, since 1 + 2 + 61 + 500 + 0 + 2 + 78 + 9 + 4 + 9 = 666.

12615000278949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12615000278949 - 2⁷ = 12615000278821 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12615000278895 and 12615000278904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12615000278449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1603234 + ... + 5272604.

It is an arithmetic number, because the mean of its divisors is an integer number (1518476644776).

Almost surely, 2^{12615000278949} is an apocalyptic number.

It is an amenable number.

12615000278949 is a deficient number, since it is larger than the sum of its proper divisors (5606719458363).

12615000278949 is a wasteful number, since it uses less digits than its factorization.

12615000278949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051368 (or 4051365 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 12615000278949 in words is "twelve trillion, six hundred fifteen billion, two hundred seventy-eight thousand, nine hundred forty-nine".