66456224852 has 6 divisors (see below), whose sum is σ = 116298393498. Its totient is φ = 33228112424.

The previous prime is 66456224837. The next prime is 66456224867. The reversal of 66456224852 is 25842265466.

It is an interprime number because it is at equal distance from previous prime (66456224837) and next prime (66456224867).

It can be written as a sum of positive squares in only one way, i.e., 65247550096 + 1208674756 = 255436^2 + 34766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66456224852.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8307028103 + ... + 8307028110.

It is an arithmetic number, because the mean of its divisors is an integer number (19383065583).

Almost surely, 2^66456224852 is an apocalyptic number.

It is an amenable number.

66456224852 is a deficient number, since it is larger than the sum of its proper divisors (49842168646).

66456224852 is a wasteful number, since it uses less digits than its factorization.

66456224852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16614056217 (or 16614056215 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 50.

The spelling of 66456224852 in words is "sixty-six billion, four hundred fifty-six million, two hundred twenty-four thousand, eight hundred fifty-two".