11621831602856 has 16 divisors (see below), whose sum is σ = 21796925768340. Its totient is φ = 5809318064640.

The previous prime is 11621831602831. The next prime is 11621831602907. The reversal of 11621831602856 is 65820613812611.

It can be written as a sum of positive squares in 2 ways, for example, as 11554111949956 + 67719652900 = 3399134^2 + 260230^2 .

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, 199686185 + ... + 199744376.

Almost surely, 2^{11621831602856} is an apocalyptic number.

It is an amenable number.

11621831602856 is a deficient number, since it is larger than the sum of its proper divisors (10175094165484).

11621831602856 is a wasteful number, since it uses less digits than its factorization.

11621831602856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399434204 (or 399434200 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 11621831602856 in words is "eleven trillion, six hundred twenty-one billion, eight hundred thirty-one million, six hundred two thousand, eight hundred fifty-six".