66040152222 has 48 divisors (see below), whose sum is σ = 145237276800. Its totient is φ = 20004159120.

The previous prime is 66040152197. The next prime is 66040152239. The reversal of 66040152222 is 22225104066.

It is a happy number.

It is a super-2 number, since 2×66040152222² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66040152222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1942623 + ... + 1976325.

It is an arithmetic number, because the mean of its divisors is an integer number (3025776600).

Almost surely, 2^66040152222 is an apocalyptic number.

66040152222 is an abundant number, since it is smaller than the sum of its proper divisors (79197124578).

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

66040152222 is a wasteful number, since it uses less digits than its factorization.

66040152222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36429 (or 36418 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 66040152222 its reverse (22225104066), we get a palindrome (88265256288).

The spelling of 66040152222 in words is "sixty-six billion, forty million, one hundred fifty-two thousand, two hundred twenty-two".