2646120878 has 8 divisors (see below), whose sum is σ = 4097219520. Its totient is φ = 1280381040.

The previous prime is 2646120857. The next prime is 2646120889. The reversal of 2646120878 is 8780216462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21339623 + ... + 21339746.

It is an arithmetic number, because the mean of its divisors is an integer number (512152440).

Almost surely, 2^2646120878 is an apocalyptic number.

2646120878 is a deficient number, since it is larger than the sum of its proper divisors (1451098642).

2646120878 is a wasteful number, since it uses less digits than its factorization.

2646120878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42679402.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 2646120878 is about 51440.4595430484. The cubic root of 2646120878 is about 1383.1519492892.

The spelling of 2646120878 in words is "two billion, six hundred forty-six million, one hundred twenty thousand, eight hundred seventy-eight".