827879977904 has 80 divisors (see below), whose sum is σ = 2013542791680. Its totient is φ = 321517278720.

The previous prime is 827879977877. The next prime is 827879977913. The reversal of 827879977904 is 409779978728.

827879977904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 8408477 + ... + 8506364.

It is an arithmetic number, because the mean of its divisors is an integer number (25169284896).

Almost surely, 2^827879977904 is an apocalyptic number.

It is an amenable number.

827879977904 is an abundant number, since it is smaller than the sum of its proper divisors (1185662813776).

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

827879977904 is a wasteful number, since it uses less digits than its factorization.

827879977904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16914898 (or 16914892 counting only the distinct ones).

The product of its (nonzero) digits is 896168448, while the sum is 77.

The spelling of 827879977904 in words is "eight hundred twenty-seven billion, eight hundred seventy-nine million, nine hundred seventy-seven thousand, nine hundred four".