66247414232 has 8 divisors (see below), whose sum is σ = 124213901700. Its totient is φ = 33123707112.

The previous prime is 66247414229. The next prime is 66247414273. The reversal of 66247414232 is 23241474266.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×66247414232² (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 66247414232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140463382 + ... + 4140463397.

Almost surely, 2^66247414232 is an apocalyptic number.

It is an amenable number.

66247414232 is a deficient number, since it is larger than the sum of its proper divisors (57966487468).

66247414232 is a wasteful number, since it uses less digits than its factorization.

66247414232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280926785 (or 8280926781 counting only the distinct ones).

The product of its digits is 387072, while the sum is 41.

Adding to 66247414232 its reverse (23241474266), we get a palindrome (89488888498).

The spelling of 66247414232 in words is "sixty-six billion, two hundred forty-seven million, four hundred fourteen thousand, two hundred thirty-two".