66542309006 has 8 divisors (see below), whose sum is σ = 100227627984. Its totient is φ = 33133099680.

The previous prime is 66542308981. The next prime is 66542309021. The reversal of 66542309006 is 60090324566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 69026810 + ... + 69027773.

It is an arithmetic number, because the mean of its divisors is an integer number (12528453498).

Almost surely, 2^66542309006 is an apocalyptic number.

66542309006 is a deficient number, since it is larger than the sum of its proper divisors (33685318978).

66542309006 is a wasteful number, since it uses less digits than its factorization.

66542309006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138054826.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 66542309006 in words is "sixty-six billion, five hundred forty-two million, three hundred nine thousand, six".