66576218382 has 40 divisors (see below), whose sum is σ = 149355243576. Its totient is φ = 22166010288.

The previous prime is 66576218369. The next prime is 66576218389. The reversal of 66576218382 is 28381267566.

66576218382 is a `hidden beast` number, since 6 + 6 + 5 + 7 + 621 + 8 + 3 + 8 + 2 = 666.

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 (66576218389) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 102708 + ... + 379079.

Almost surely, 2^66576218382 is an apocalyptic number.

66576218382 is an abundant number, since it is smaller than the sum of its proper divisors (82779025194).

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

66576218382 is a wasteful number, since it uses less digits than its factorization.

66576218382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482654 (or 482645 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 66576218382 in words is "sixty-six billion, five hundred seventy-six million, two hundred eighteen thousand, three hundred eighty-two".