66703336666671 has 32 divisors (see below), whose sum is σ = 93516785663488. Its totient is φ = 42237732942720.

The previous prime is 66703336666667. The next prime is 66703336666699. The reversal of 66703336666671 is 17666663330766.

It is not a de Polignac number, because 66703336666671 - 2² = 66703336666667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66703336866671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4923105 + ... + 12555621.

It is an arithmetic number, because the mean of its divisors is an integer number (2922399551984).

Almost surely, 2^{66703336666671} is an apocalyptic number.

66703336666671 is a deficient number, since it is larger than the sum of its proper divisors (26813448996817).

66703336666671 is a wasteful number, since it uses less digits than its factorization.

66703336666671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7634431.

The product of its (nonzero) digits is 370355328, while the sum is 66.

The spelling of 66703336666671 in words is "sixty-six trillion, seven hundred three billion, three hundred thirty-six million, six hundred sixty-six thousand, six hundred seventy-one".