8220129303636 has 48 divisors (see below), whose sum is σ = 21311954865600. Its totient is φ = 2739977719776.

The previous prime is 8220129303593. The next prime is 8220129303667. The reversal of 8220129303636 is 6363039210228.

8220129303636 is a `hidden beast` number, since 8 + 2 + 2 + 0 + 1 + 2 + 9 + 3 + 0 + 3 + 636 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 8220129303591 and 8220129303600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3749070 + ... + 5522298.

It is an arithmetic number, because the mean of its divisors is an integer number (443999059700).

Almost surely, 2^{8220129303636} is an apocalyptic number.

It is an amenable number.

8220129303636 is an abundant number, since it is smaller than the sum of its proper divisors (13091825561964).

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

8220129303636 is a wasteful number, since it uses less digits than its factorization.

8220129303636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816165 (or 1816157 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 8220129303636 in words is "eight trillion, two hundred twenty billion, one hundred twenty-nine million, three hundred three thousand, six hundred thirty-six".