6733189435921 has 9 divisors (see below), whose sum is σ = 7291004969979. Its totient is φ = 6215220648936.

The previous prime is 6733189435901. The next prime is 6733189435927. The reversal of 6733189435921 is 1295349813376.

The square root of 6733189435921 is 2594839.

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., 996033940225 + 5737155495696 = 998015^2 + 2395236^2 .

It is not a de Polignac number, because 6733189435921 - 2⁷ = 6733189435793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6733189435921.

It is not an unprimeable number, because it can be changed into a prime (6733189435927) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 33633106 + ... + 33832708.

It is an arithmetic number, because the mean of its divisors is an integer number (810111663331).

Almost surely, 2^{6733189435921} is an apocalyptic number.

6733189435921 is the 2594839-th square number.

6733189435921 is the 1297420-th centered octagonal number.

It is an amenable number.

6733189435921 is a deficient number, since it is larger than the sum of its proper divisors (557815534058).

6733189435921 is an frugal number, since it uses more digits than its factorization.

6733189435921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399232 (or 199616 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 61.

The spelling of 6733189435921 in words is "six trillion, seven hundred thirty-three billion, one hundred eighty-nine million, four hundred thirty-five thousand, nine hundred twenty-one".