33116220450 has 72 divisors (see below), whose sum is σ = 89065424448. Its totient is φ = 8821743840.

The previous prime is 33116220443. The next prime is 33116220457. The reversal of 33116220450 is 5402261133.

33116220450 is a `hidden beast` number, since 3 + 31 + 1 + 622 + 0 + 4 + 5 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (33116220443) and next prime (33116220457).

It is not an unprimeable number, because it can be changed into a prime (33116220457) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 397099 + ... + 473201.

It is an arithmetic number, because the mean of its divisors is an integer number (1237019784).

Almost surely, 2^33116220450 is an apocalyptic number.

33116220450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 33116220450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44532712224).

33116220450 is an abundant number, since it is smaller than the sum of its proper divisors (55949203998).

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

33116220450 is a wasteful number, since it uses less digits than its factorization.

33116220450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77088 (or 77080 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 33116220450 its reverse (5402261133), we get a palindrome (38518481583).

The spelling of 33116220450 in words is "thirty-three billion, one hundred sixteen million, two hundred twenty thousand, four hundred fifty".