66434800224 has 48 divisors (see below), whose sum is σ = 187806073392. Its totient is φ = 20441476608.

The previous prime is 66434800219. The next prime is 66434800253. The reversal of 66434800224 is 42200843466.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26615259 + ... + 26617754.

It is an arithmetic number, because the mean of its divisors is an integer number (3912626529).

Almost surely, 2^66434800224 is an apocalyptic number.

It is an amenable number.

66434800224 is an abundant number, since it is smaller than the sum of its proper divisors (121371273168).

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

66434800224 is a wasteful number, since it uses less digits than its factorization.

66434800224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53233039 (or 53233031 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 39.

The spelling of 66434800224 in words is "sixty-six billion, four hundred thirty-four million, eight hundred thousand, two hundred twenty-four".