33520120145 has 8 divisors (see below), whose sum is σ = 40226531904. Its totient is φ = 26814504304.

The previous prime is 33520120133. The next prime is 33520120159. The reversal of 33520120145 is 54102102533.

It is a happy number.

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 33520120145 - 2⁸ = 33520119889 is a prime.

It is a super-2 number, since 2×33520120145² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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, 102029 + ... + 278298.

It is an arithmetic number, because the mean of its divisors is an integer number (5028316488).

Almost surely, 2^33520120145 is an apocalyptic number.

It is an amenable number.

33520120145 is a deficient number, since it is larger than the sum of its proper divisors (6706411759).

33520120145 is a wasteful number, since it uses less digits than its factorization.

33520120145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397959.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 33520120145 its reverse (54102102533), we get a palindrome (87622222678).

The spelling of 33520120145 in words is "thirty-three billion, five hundred twenty million, one hundred twenty thousand, one hundred forty-five".