2578808783 has 8 divisors (see below), whose sum is σ = 2700652128. Its totient is φ = 2457775584.

The previous prime is 2578808779. The next prime is 2578808807. The reversal of 2578808783 is 3878088752.

It is a happy number.

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

It is not a de Polignac number, because 2578808783 - 2² = 2578808779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578808723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196016 + ... + 208757.

It is an arithmetic number, because the mean of its divisors is an integer number (337581516).

Almost surely, 2^2578808783 is an apocalyptic number.

2578808783 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2578808783 is a deficient number, since it is larger than the sum of its proper divisors (121843345).

2578808783 is a wasteful number, since it uses less digits than its factorization.

2578808783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405073.

The product of its (nonzero) digits is 6021120, while the sum is 56.

The square root of 2578808783 is about 50781.9730120837. The cubic root of 2578808783 is about 1371.3228530079.

The spelling of 2578808783 in words is "two billion, five hundred seventy-eight million, eight hundred eight thousand, seven hundred eighty-three".