33561037489 has 32 divisors (see below), whose sum is σ = 40280924160. Its totient is φ = 27339208512.

The previous prime is 33561037481. The next prime is 33561037493. The reversal of 33561037489 is 98473016533.

It is not a de Polignac number, because 33561037489 - 2³ = 33561037481 is a prime.

It is a super-2 number, since 2×33561037489² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33561037481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26280519 + ... + 26281795.

It is an arithmetic number, because the mean of its divisors is an integer number (1258778880).

Almost surely, 2^33561037489 is an apocalyptic number.

It is an amenable number.

33561037489 is a deficient number, since it is larger than the sum of its proper divisors (6719886671).

33561037489 is a wasteful number, since it uses less digits than its factorization.

33561037489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 33561037489 in words is "thirty-three billion, five hundred sixty-one million, thirty-seven thousand, four hundred eighty-nine".