8199137209556 has 12 divisors (see below), whose sum is σ = 14348511139200. Its totient is φ = 4099562598360.

The previous prime is 8199137209513. The next prime is 8199137209577. The reversal of 8199137209556 is 6559027319918.

It is a super-2 number, since 2×8199137209556² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8199137209492 and 8199137209501.

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, 3217991 + ... + 5172401.

It is an arithmetic number, because the mean of its divisors is an integer number (1195709261600).

Almost surely, 2^{8199137209556} is an apocalyptic number.

It is an amenable number.

8199137209556 is a deficient number, since it is larger than the sum of its proper divisors (6149373929644).

8199137209556 is a wasteful number, since it uses less digits than its factorization.

8199137209556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003214 (or 3003212 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 65.

The spelling of 8199137209556 in words is "eight trillion, one hundred ninety-nine billion, one hundred thirty-seven million, two hundred nine thousand, five hundred fifty-six".