2578078078 has 8 divisors (see below), whose sum is σ = 3875731200. Its totient is φ = 1286167680.

The previous prime is 2578078051. The next prime is 2578078091. The reversal of 2578078078 is 8708708752.

It is a happy number.

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, 1434558 + ... + 1436353.

It is an arithmetic number, because the mean of its divisors is an integer number (484466400).

Almost surely, 2^2578078078 is an apocalyptic number.

2578078078 is a deficient number, since it is larger than the sum of its proper divisors (1297653122).

2578078078 is a wasteful number, since it uses less digits than its factorization.

2578078078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871362.

The product of its (nonzero) digits is 1756160, while the sum is 52.

The square root of 2578078078 is about 50774.7779709572. Note that the first 3 decimals coincide. The cubic root of 2578078078 is about 1371.1933194123.

The spelling of 2578078078 in words is "two billion, five hundred seventy-eight million, seventy-eight thousand, seventy-eight".