66435331050 has 288 divisors, whose sum is σ = 208089984960. Its totient is φ = 15017011200.

The previous prime is 66435331043. The next prime is 66435331073. The reversal of 66435331050 is 5013353466.

66435331050 is a `hidden beast` number, since 6 + 64 + 3 + 533 + 10 + 50 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66435330996 and 66435331014.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9168729 + ... + 9175971.

It is an arithmetic number, because the mean of its divisors is an integer number (722534670).

Almost surely, 2^66435331050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66435331050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104044992480).

66435331050 is an abundant number, since it is smaller than the sum of its proper divisors (141654653910).

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

66435331050 is a wasteful number, since it uses less digits than its factorization.

66435331050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7398 (or 7390 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The spelling of 66435331050 in words is "sixty-six billion, four hundred thirty-five million, three hundred thirty-one thousand, fifty".