33720073845 has 8 divisors (see below), whose sum is σ = 53952118176. Its totient is φ = 17984039376.

The previous prime is 33720073831. The next prime is 33720073853. The reversal of 33720073845 is 54837002733.

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

It is not a de Polignac number, because 33720073845 - 2⁶ = 33720073781 is a prime.

It is a super-2 number, since 2×33720073845² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 33720073797 and 33720073806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1124002447 + ... + 1124002476.

It is an arithmetic number, because the mean of its divisors is an integer number (6744014772).

Almost surely, 2^33720073845 is an apocalyptic number.

It is an amenable number.

33720073845 is a deficient number, since it is larger than the sum of its proper divisors (20232044331).

33720073845 is a wasteful number, since it uses less digits than its factorization.

33720073845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248004931.

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 33720073845 in words is "thirty-three billion, seven hundred twenty million, seventy-three thousand, eight hundred forty-five".