33281945545 has 16 divisors (see below), whose sum is σ = 40203217152. Its totient is φ = 26449130880.

The previous prime is 33281945503. The next prime is 33281945581. The reversal of 33281945545 is 54554918233.

It is a de Polignac number, because none of the positive numbers 2^k-33281945545 is a prime.

It is a super-2 number, since 2×33281945545² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1850064 + ... + 1867966.

It is an arithmetic number, because the mean of its divisors is an integer number (2512701072).

Almost surely, 2^33281945545 is an apocalyptic number.

It is an amenable number.

33281945545 is a deficient number, since it is larger than the sum of its proper divisors (6921271607).

33281945545 is a wasteful number, since it uses less digits than its factorization.

33281945545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20352.

The product of its digits is 2592000, while the sum is 49.

The spelling of 33281945545 in words is "thirty-three billion, two hundred eighty-one million, nine hundred forty-five thousand, five hundred forty-five".