827798370687 has 48 divisors (see below), whose sum is σ = 1247164308000. Its totient is φ = 528442548480.

The previous prime is 827798370671. The next prime is 827798370701. The reversal of 827798370687 is 786073897728.

It is not a de Polignac number, because 827798370687 - 2⁴ = 827798370671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827798370667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25689528 + ... + 25721730.

It is an arithmetic number, because the mean of its divisors is an integer number (25982589750).

Almost surely, 2^827798370687 is an apocalyptic number.

827798370687 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

827798370687 is a deficient number, since it is larger than the sum of its proper divisors (419365937313).

827798370687 is a wasteful number, since it uses less digits than its factorization.

827798370687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33048 (or 33045 counting only the distinct ones).

The product of its (nonzero) digits is 398297088, while the sum is 72.

The spelling of 827798370687 in words is "eight hundred twenty-seven billion, seven hundred ninety-eight million, three hundred seventy thousand, six hundred eighty-seven".