827774221854 has 16 divisors (see below), whose sum is σ = 1658713934592. Its totient is φ = 275397158808.

The previous prime is 827774221849. The next prime is 827774221907. The reversal of 827774221854 is 458122477728.

It is a super-2 number, since 2×827774221854² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 827774221794 and 827774221803.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 131892054 + ... + 131898329.

It is an arithmetic number, because the mean of its divisors is an integer number (103669620912).

Almost surely, 2^827774221854 is an apocalyptic number.

827774221854 is an abundant number, since it is smaller than the sum of its proper divisors (830939712738).

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

827774221854 is a wasteful number, since it uses less digits than its factorization.

827774221854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263790911.

The product of its digits is 14049280, while the sum is 57.

The spelling of 827774221854 in words is "eight hundred twenty-seven billion, seven hundred seventy-four million, two hundred twenty-one thousand, eight hundred fifty-four".