66661352322 has 32 divisors (see below), whose sum is σ = 136601337600. Its totient is φ = 21674225280.

The previous prime is 66661352299. The next prime is 66661352347. The reversal of 66661352322 is 22325316666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1376679 + ... + 1424277.

It is an arithmetic number, because the mean of its divisors is an integer number (4268791800).

Almost surely, 2^66661352322 is an apocalyptic number.

66661352322 is an abundant number, since it is smaller than the sum of its proper divisors (69939985278).

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

66661352322 is a wasteful number, since it uses less digits than its factorization.

66661352322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53338.

The product of its digits is 466560, while the sum is 42.

Adding to 66661352322 its reverse (22325316666), we get a palindrome (88986668988).

The spelling of 66661352322 in words is "sixty-six billion, six hundred sixty-one million, three hundred fifty-two thousand, three hundred twenty-two".