33380751616 has 81 divisors (see below), whose sum is σ = 70439787873. Its totient is φ = 15785625600.

The previous prime is 33380751611. The next prime is 33380751631. The reversal of 33380751616 is 61615708333.

It is a happy number.

The square root of 33380751616 is 182704.

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., 28057590016 + 5323161600 = 167504^2 + 72960^2 .

It is a super-2 number, since 2×33380751616² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33380751611) 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, 55541716 + ... + 55542316.

Almost surely, 2^33380751616 is an apocalyptic number.

33380751616 is the 182704-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33380751616

33380751616 is an abundant number, since it is smaller than the sum of its proper divisors (37059036257).

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

33380751616 is an frugal number, since it uses more digits than its factorization.

33380751616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

It can be divided in two parts, 33380 and 751616, that added together give a square (784996 = 886²).

The spelling of 33380751616 in words is "thirty-three billion, three hundred eighty million, seven hundred fifty-one thousand, six hundred sixteen".