66668501241 has 48 divisors (see below), whose sum is σ = 98331717120. Its totient is φ = 43518384000.

The previous prime is 66668501239. The next prime is 66668501321. The reversal of 66668501241 is 14210586666.

66668501241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66668501241 - 2¹ = 66668501239 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66668506241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81203611 + ... + 81204431.

It is an arithmetic number, because the mean of its divisors is an integer number (2048577440).

Almost surely, 2^66668501241 is an apocalyptic number.

It is an amenable number.

66668501241 is a deficient number, since it is larger than the sum of its proper divisors (31663215879).

66668501241 is a wasteful number, since it uses less digits than its factorization.

66668501241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 1715 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 66668501241 in words is "sixty-six billion, six hundred sixty-eight million, five hundred one thousand, two hundred forty-one".