33620745149 has 4 divisors (see below), whose sum is σ = 33767560860. Its totient is φ = 33473929440.

The previous prime is 33620745139. The next prime is 33620745217. The reversal of 33620745149 is 94154702633.

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 19679039524 + 13941705625 = 140282^2 + 118075^2 .

It is a cyclic number.

It is not a de Polignac number, because 33620745149 - 2⁸ = 33620744893 is a prime.

It is a super-2 number, since 2×33620745149² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33620745139) 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, 73407512 + ... + 73407969.

It is an arithmetic number, because the mean of its divisors is an integer number (8441890215).

Almost surely, 2^33620745149 is an apocalyptic number.

It is an amenable number.

33620745149 is a deficient number, since it is larger than the sum of its proper divisors (146815711).

33620745149 is a wasteful number, since it uses less digits than its factorization.

33620745149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146815710.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 33620745149 in words is "thirty-three billion, six hundred twenty million, seven hundred forty-five thousand, one hundred forty-nine".