33140145541 has 4 divisors (see below), whose sum is σ = 33258082284. Its totient is φ = 33022208800.

The previous prime is 33140145509. The next prime is 33140145551. The reversal of 33140145541 is 14554104133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19419537316 + 13720608225 = 139354^2 + 117135^2 .

It is a cyclic number.

It is not a de Polignac number, because 33140145541 - 2⁵ = 33140145509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33140145551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58967950 + ... + 58968511.

It is an arithmetic number, because the mean of its divisors is an integer number (8314520571).

Almost surely, 2^33140145541 is an apocalyptic number.

It is an amenable number.

33140145541 is a deficient number, since it is larger than the sum of its proper divisors (117936743).

33140145541 is a wasteful number, since it uses less digits than its factorization.

33140145541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117936742.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 33140145541 its reverse (14554104133), we get a palindrome (47694249674).

The spelling of 33140145541 in words is "thirty-three billion, one hundred forty million, one hundred forty-five thousand, five hundred forty-one".