66652833744 has 160 divisors (see below), whose sum is σ = 218768259840. Its totient is φ = 19033325568.

The previous prime is 66652833727. The next prime is 66652833749. The reversal of 66652833744 is 44733825666.

It is a super-2 number, since 2×66652833744² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66652833749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6868704 + ... + 6878400.

It is an arithmetic number, because the mean of its divisors is an integer number (1367301624).

Almost surely, 2^66652833744 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 66652833744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109384129920).

66652833744 is an abundant number, since it is smaller than the sum of its proper divisors (152115426096).

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

66652833744 is a wasteful number, since it uses less digits than its factorization.

66652833744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11994 (or 11982 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 54.

The spelling of 66652833744 in words is "sixty-six billion, six hundred fifty-two million, eight hundred thirty-three thousand, seven hundred forty-four".