33120255616 has 64 divisors (see below), whose sum is σ = 76946760000. Its totient is φ = 14194376448.

The previous prime is 33120255547. The next prime is 33120255731. The reversal of 33120255616 is 61655202133.

It is a tau number, because it is divible by the number of its divisors (64).

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, 333286 + ... + 421093.

It is an arithmetic number, because the mean of its divisors is an integer number (1202293125).

Almost surely, 2^33120255616 is an apocalyptic number.

It is an amenable number.

33120255616 is an abundant number, since it is smaller than the sum of its proper divisors (43826504384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33120255616 is an frugal number, since it uses more digits than its factorization.

33120255616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754414 (or 754388 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 33120255616 its reverse (61655202133), we get a palindrome (94775457749).

The spelling of 33120255616 in words is "thirty-three billion, one hundred twenty million, two hundred fifty-five thousand, six hundred sixteen".