2558273978 has 8 divisors (see below), whose sum is σ = 4132596468. Its totient is φ = 1180741824.

The previous prime is 2558273959. The next prime is 2558273989. The reversal of 2558273978 is 8793728552.

2558273978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2185282009 + 372991969 = 46747^2 + 19313^2 .

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

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, 49197551 + ... + 49197602.

Almost surely, 2^2558273978 is an apocalyptic number.

2558273978 is a deficient number, since it is larger than the sum of its proper divisors (1574322490).

2558273978 is a wasteful number, since it uses less digits than its factorization.

2558273978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98395168.

The product of its digits is 8467200, while the sum is 56.

The square root of 2558273978 is about 50579.3829341561. The cubic root of 2558273978 is about 1367.6732448758.

The spelling of 2558273978 in words is "two billion, five hundred fifty-eight million, two hundred seventy-three thousand, nine hundred seventy-eight".