66956885103 has 16 divisors (see below), whose sum is σ = 92628413280. Its totient is φ = 42970776576.

The previous prime is 66956885101. The next prime is 66956885113. The reversal of 66956885103 is 30158865966.

It is not a de Polignac number, because 66956885103 - 2¹ = 66956885101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66956885101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1112550 + ... + 1171187.

It is an arithmetic number, because the mean of its divisors is an integer number (5789275830).

Almost surely, 2^66956885103 is an apocalyptic number.

66956885103 is a deficient number, since it is larger than the sum of its proper divisors (25671528177).

66956885103 is a wasteful number, since it uses less digits than its factorization.

66956885103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284106.

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 66956885103 in words is "sixty-six billion, nine hundred fifty-six million, eight hundred eighty-five thousand, one hundred three".