33029949721 has 8 divisors (see below), whose sum is σ = 33150708864. Its totient is φ = 32909358480.

The previous prime is 33029949671. The next prime is 33029949767. The reversal of 33029949721 is 12794992033.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33029949721 - 2⁷ = 33029949593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33029949521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359151 + ... + 441643.

It is an arithmetic number, because the mean of its divisors is an integer number (4143838608).

Almost surely, 2^33029949721 is an apocalyptic number.

It is an amenable number.

33029949721 is a deficient number, since it is larger than the sum of its proper divisors (120759143).

33029949721 is a wasteful number, since it uses less digits than its factorization.

33029949721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83951.

The product of its (nonzero) digits is 734832, while the sum is 49.

The spelling of 33029949721 in words is "thirty-three billion, twenty-nine million, nine hundred forty-nine thousand, seven hundred twenty-one".