66315444148 has 24 divisors (see below), whose sum is σ = 116934376104. Its totient is φ = 32906140800.

The previous prime is 66315444119. The next prime is 66315444149. The reversal of 66315444148 is 84144451366.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 306530064 + 66008914084 = 17508^2 + 256922^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66315444098 and 66315444107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66315444149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451278 + ... + 579898.

It is an arithmetic number, because the mean of its divisors is an integer number (4872265671).

Almost surely, 2^66315444148 is an apocalyptic number.

It is an amenable number.

66315444148 is a deficient number, since it is larger than the sum of its proper divisors (50618931956).

66315444148 is a wasteful number, since it uses less digits than its factorization.

66315444148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129603 (or 129601 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 46.

The spelling of 66315444148 in words is "sixty-six billion, three hundred fifteen million, four hundred forty-four thousand, one hundred forty-eight".