1800361821996 has 72 divisors (see below), whose sum is σ = 4839843219120. Its totient is φ = 562331160576.

The previous prime is 1800361821959. The next prime is 1800361822003. The reversal of 1800361821996 is 6991281630081.

1800361821996 is a `hidden beast` number, since 1 + 8 + 0 + 0 + 3 + 618 + 2 + 19 + 9 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6340741 + ... + 6618588.

It is an arithmetic number, because the mean of its divisors is an integer number (67220044710).

Almost surely, 2^{1800361821996} is an apocalyptic number.

It is an amenable number.

1800361821996 is an abundant number, since it is smaller than the sum of its proper divisors (3039481397124).

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

1800361821996 is a wasteful number, since it uses less digits than its factorization.

1800361821996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12959583 (or 12959578 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 1800361821996 in words is "one trillion, eight hundred billion, three hundred sixty-one million, eight hundred twenty-one thousand, nine hundred ninety-six".