66726053106 has 32 divisors (see below), whose sum is σ = 139644123648. Its totient is φ = 21229672320.

The previous prime is 66726053101. The next prime is 66726053123. The reversal of 66726053106 is 60135062766.

It is not an unprimeable number, because it can be changed into a prime (66726053101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2443561 + ... + 2470716.

It is an arithmetic number, because the mean of its divisors is an integer number (4363878864).

Almost surely, 2^66726053106 is an apocalyptic number.

66726053106 is an abundant number, since it is smaller than the sum of its proper divisors (72918070542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66726053106 is a wasteful number, since it uses less digits than its factorization.

66726053106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914386.

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 66726053106 in words is "sixty-six billion, seven hundred twenty-six million, fifty-three thousand, one hundred six".