66235503200 has 144 divisors (see below), whose sum is σ = 164464473600. Its totient is φ = 26042565120.

The previous prime is 66235503179. The next prime is 66235503211. The reversal of 66235503200 is 230553266.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 32105369 + ... + 32107431.

It is an arithmetic number, because the mean of its divisors is an integer number (1142114400).

Almost surely, 2^66235503200 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 66235503200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82232236800).

66235503200 is an abundant number, since it is smaller than the sum of its proper divisors (98228970400).

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

66235503200 is a wasteful number, since it uses less digits than its factorization.

66235503200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749 (or 2736 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

The spelling of 66235503200 in words is "sixty-six billion, two hundred thirty-five million, five hundred three thousand, two hundred".