66198200592 has 80 divisors (see below), whose sum is σ = 172703017728. Its totient is φ = 21848279040.

The previous prime is 66198200573. The next prime is 66198200597. The reversal of 66198200592 is 29500289166.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (66198200597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5749113 + ... + 5760615.

Almost surely, 2^66198200592 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 66198200592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86351508864).

66198200592 is an abundant number, since it is smaller than the sum of its proper divisors (106504817136).

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

66198200592 is a wasteful number, since it uses less digits than its factorization.

66198200592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12688 (or 12682 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 66198200592 in words is "sixty-six billion, one hundred ninety-eight million, two hundred thousand, five hundred ninety-two".