66586980352 has 52 divisors (see below), whose sum is σ = 134380235440. Its totient is φ = 32987824128.

The previous prime is 66586980319. The next prime is 66586980353. The reversal of 66586980352 is 25308968566.

It is not an unprimeable number, because it can be changed into a prime (66586980353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371893 + ... + 521035.

Almost surely, 2^66586980352 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 66586980352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67190117720).

66586980352 is an abundant number, since it is smaller than the sum of its proper divisors (67793255088).

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

66586980352 is a wasteful number, since it uses less digits than its factorization.

66586980352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149276 (or 149254 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 58.

The spelling of 66586980352 in words is "sixty-six billion, five hundred eighty-six million, nine hundred eighty thousand, three hundred fifty-two".