33121474460 has 48 divisors (see below), whose sum is σ = 71859631872. Its totient is φ = 12810355200.

The previous prime is 33121474411. The next prime is 33121474469. The reversal of 33121474460 is 6447412133.

It is a self number, because there is not a number n which added to its sum of digits gives 33121474460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33121474469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730040 + ... + 774080.

It is an arithmetic number, because the mean of its divisors is an integer number (1497075664).

Almost surely, 2^33121474460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33121474460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35929815936).

33121474460 is an abundant number, since it is smaller than the sum of its proper divisors (38738157412).

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

33121474460 is a wasteful number, since it uses less digits than its factorization.

33121474460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45294 (or 45292 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

Adding to 33121474460 its reverse (6447412133), we get a palindrome (39568886593).

The spelling of 33121474460 in words is "thirty-three billion, one hundred twenty-one million, four hundred seventy-four thousand, four hundred sixty".