821622284104 has 16 divisors (see below), whose sum is σ = 1540552474620. Its totient is φ = 410808290880.

The previous prime is 821622284053. The next prime is 821622284113. The reversal of 821622284104 is 401482226128.

It can be written as a sum of positive squares in 2 ways, for example, as 810003600004 + 11618684100 = 900002^2 + 107790^2 .

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 3 ways as a sum of consecutive naturals, for example, 1347522 + ... + 1859854.

Almost surely, 2^821622284104 is an apocalyptic number.

It is an amenable number.

821622284104 is a deficient number, since it is larger than the sum of its proper divisors (718930190516).

821622284104 is a wasteful number, since it uses less digits than its factorization.

821622284104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712800 (or 712796 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 821622284104 in words is "eight hundred twenty-one billion, six hundred twenty-two million, two hundred eighty-four thousand, one hundred four".