66254413441544 has 16 divisors (see below), whose sum is σ = 125049720736320. Its totient is φ = 32907821245200.

The previous prime is 66254413441501. The next prime is 66254413441603. The reversal of 66254413441544 is 44514431445266.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27423183164 + ... + 27423185579.

It is an arithmetic number, because the mean of its divisors is an integer number (7815607546020).

Almost surely, 2^{66254413441544} is an apocalyptic number.

It is an amenable number.

66254413441544 is a deficient number, since it is larger than the sum of its proper divisors (58795307294776).

66254413441544 is a wasteful number, since it uses less digits than its factorization.

66254413441544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54846368900 (or 54846368896 counting only the distinct ones).

The product of its digits is 22118400, while the sum is 53.

The spelling of 66254413441544 in words is "sixty-six trillion, two hundred fifty-four billion, four hundred thirteen million, four hundred forty-one thousand, five hundred forty-four".