1220504532536 has 16 divisors (see below), whose sum is σ = 2288667409200. Its totient is φ = 610193223424.

The previous prime is 1220504532529. The next prime is 1220504532551. The reversal of 1220504532536 is 6352354050221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220504532536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7292441 + ... + 7457928.

It is an arithmetic number, because the mean of its divisors is an integer number (143041713075).

Almost surely, 2^{1220504532536} is an apocalyptic number.

It is an amenable number.

1220504532536 is a deficient number, since it is larger than the sum of its proper divisors (1068162876664).

1220504532536 is a wasteful number, since it uses less digits than its factorization.

1220504532536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14760718 (or 14760714 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 1220504532536 its reverse (6352354050221), we get a palindrome (7572858582757).

The spelling of 1220504532536 in words is "one trillion, two hundred twenty billion, five hundred four million, five hundred thirty-two thousand, five hundred thirty-six".