66627315834 has 16 divisors (see below), whose sum is σ = 133746349440. Its totient is φ = 22127152320.

The previous prime is 66627315817. The next prime is 66627315847. The reversal of 66627315834 is 43851372666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20486479 + ... + 20489730.

It is an arithmetic number, because the mean of its divisors is an integer number (8359146840).

Almost surely, 2^66627315834 is an apocalyptic number.

66627315834 is an abundant number, since it is smaller than the sum of its proper divisors (67119033606).

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

66627315834 is a wasteful number, since it uses less digits than its factorization.

66627315834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40976485.

The product of its digits is 4354560, while the sum is 51.

The spelling of 66627315834 in words is "sixty-six billion, six hundred twenty-seven million, three hundred fifteen thousand, eight hundred thirty-four".