2005850087878 has 32 divisors (see below), whose sum is σ = 3864112551936. Its totient is φ = 759022105248.

The previous prime is 2005850087783. The next prime is 2005850087887. The reversal of 2005850087878 is 8787800585002.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239586126 + ... + 239594497.

It is an arithmetic number, because the mean of its divisors is an integer number (120753517248).

Almost surely, 2^{2005850087878} is an apocalyptic number.

2005850087878 is a deficient number, since it is larger than the sum of its proper divisors (1858262464058).

2005850087878 is a wasteful number, since it uses less digits than its factorization.

2005850087878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479180668.

The product of its (nonzero) digits is 10035200, while the sum is 58.

The spelling of 2005850087878 in words is "two trillion, five billion, eight hundred fifty million, eighty-seven thousand, eight hundred seventy-eight".