828638780277 has 64 divisors (see below), whose sum is σ = 1466268825600. Its totient is φ = 403223546880.

The previous prime is 828638780261. The next prime is 828638780293. The reversal of 828638780277 is 772087836828.

It is an interprime number because it is at equal distance from previous prime (828638780261) and next prime (828638780293).

It is not a de Polignac number, because 828638780277 - 2⁴ = 828638780261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828638780227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 670048 + ... + 1451289.

It is an arithmetic number, because the mean of its divisors is an integer number (22910450400).

Almost surely, 2^828638780277 is an apocalyptic number.

It is an amenable number.

828638780277 is a deficient number, since it is larger than the sum of its proper divisors (637630045323).

828638780277 is a wasteful number, since it uses less digits than its factorization.

828638780277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121466.

The product of its (nonzero) digits is 101154816, while the sum is 66.

The spelling of 828638780277 in words is "eight hundred twenty-eight billion, six hundred thirty-eight million, seven hundred eighty thousand, two hundred seventy-seven".