827099970772 has 6 divisors (see below), whose sum is σ = 1447424948858. Its totient is φ = 413549985384.

The previous prime is 827099970743. The next prime is 827099970797. The reversal of 827099970772 is 277079990728.

It can be written as a sum of positive squares in only one way, i.e., 816558020496 + 10541950276 = 903636^2 + 102674^2 .

It is a junction number, because it is equal to n+sod(n) for n = 827099970698 and 827099970707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103387496343 + ... + 103387496350.

Almost surely, 2^827099970772 is an apocalyptic number.

It is an amenable number.

827099970772 is a deficient number, since it is larger than the sum of its proper divisors (620324978086).

827099970772 is a wasteful number, since it uses less digits than its factorization.

827099970772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206774992697 (or 206774992695 counting only the distinct ones).

The product of its (nonzero) digits is 56010528, while the sum is 67.

The spelling of 827099970772 in words is "eight hundred twenty-seven billion, ninety-nine million, nine hundred seventy thousand, seven hundred seventy-two".