33121816036 has 9 divisors (see below), whose sum is σ = 57963815049. Its totient is φ = 16560726024.

The previous prime is 33121816031. The next prime is 33121816069. The reversal of 33121816036 is 63061812133.

The square root of 33121816036 is 181994.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 989102500 + 32132713536 = 31450^2 + 179256^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33121815992 and 33121816010.

It is not an unprimeable number, because it can be changed into a prime (33121816031) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 318490 + ... + 409486.

Almost surely, 2^33121816036 is an apocalyptic number.

33121816036 is the 181994-th square number.

It is an amenable number.

33121816036 is a deficient number, since it is larger than the sum of its proper divisors (24841999013).

33121816036 is an frugal number, since it uses more digits than its factorization.

33121816036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181998 (or 90999 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 33121816036 in words is "thirty-three billion, one hundred twenty-one million, eight hundred sixteen thousand, thirty-six".