66266636010 has 32 divisors (see below), whose sum is σ = 159046759872. Its totient is φ = 17670343680.

The previous prime is 66266635997. The next prime is 66266636017. The reversal of 66266636010 is 1063666266.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66266636017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1199905 + ... + 1253915.

It is an arithmetic number, because the mean of its divisors is an integer number (4970211246).

Almost surely, 2^66266636010 is an apocalyptic number.

66266636010 is an abundant number, since it is smaller than the sum of its proper divisors (92780123862).

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

66266636010 is a wasteful number, since it uses less digits than its factorization.

66266636010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94918.

The product of its (nonzero) digits is 279936, while the sum is 42.

The spelling of 66266636010 in words is "sixty-six billion, two hundred sixty-six million, six hundred thirty-six thousand, ten".