33738430991720 has 128 divisors (see below), whose sum is σ = 93774262256640. Its totient is φ = 10638256020480.

The previous prime is 33738430991669. The next prime is 33738430991743. The reversal of 33738430991720 is 2719903483733.

It is a super-2 number, since 2×33738430991720² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33738430991720.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16114667 + ... + 18087546.

It is an arithmetic number, because the mean of its divisors is an integer number (732611423880).

Almost surely, 2^{33738430991720} is an apocalyptic number.

It is an amenable number.

33738430991720 is an abundant number, since it is smaller than the sum of its proper divisors (60035831264920).

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

33738430991720 is a wasteful number, since it uses less digits than its factorization.

33738430991720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34202515 (or 34202511 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 59.

The spelling of 33738430991720 in words is "thirty-three trillion, seven hundred thirty-eight billion, four hundred thirty million, nine hundred ninety-one thousand, seven hundred twenty".