7870801878 has 12 divisors (see below), whose sum is σ = 17053404108. Its totient is φ = 2623600620.

The previous prime is 7870801877. The next prime is 7870801891. The reversal of 7870801878 is 8781080787.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7870801877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218633368 + ... + 218633403.

It is an arithmetic number, because the mean of its divisors is an integer number (1421117009).

Almost surely, 2^7870801878 is an apocalyptic number.

7870801878 is an abundant number, since it is smaller than the sum of its proper divisors (9182602230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7870801878 is a wasteful number, since it uses less digits than its factorization.

7870801878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437266779 (or 437266776 counting only the distinct ones).

The product of its (nonzero) digits is 1404928, while the sum is 54.

The square root of 7870801878 is about 88717.5398554311. The cubic root of 7870801878 is about 1989.1750052846.

The spelling of 7870801878 in words is "seven billion, eight hundred seventy million, eight hundred one thousand, eight hundred seventy-eight".