66033554832 has 420 divisors, whose sum is σ = 230400062976. Its totient is φ = 18253226880.

The previous prime is 66033554819. The next prime is 66033554833. The reversal of 66033554832 is 23845533066.

66033554832 is a `hidden beast` number, since 6 + 60 + 3 + 3 + 554 + 8 + 32 = 666.

It is not an unprimeable number, because it can be changed into a prime (66033554833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 17715753 + ... + 17719479.

Almost surely, 2^66033554832 is an apocalyptic number.

66033554832 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66033554832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115200031488).

66033554832 is an abundant number, since it is smaller than the sum of its proper divisors (164366508144).

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

66033554832 is a wasteful number, since it uses less digits than its factorization.

66033554832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798 (or 3770 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 66033554832 in words is "sixty-six billion, thirty-three million, five hundred fifty-four thousand, eight hundred thirty-two".