66315055103 has 4 divisors (see below), whose sum is σ = 72343696488. Its totient is φ = 60286413720.

The previous prime is 66315055067. The next prime is 66315055133. The reversal of 66315055103 is 30155051366.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66315055103 - 2⁶ = 66315055039 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 (66315055133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3014320676 + ... + 3014320697.

It is an arithmetic number, because the mean of its divisors is an integer number (18085924122).

Almost surely, 2^66315055103 is an apocalyptic number.

66315055103 is a deficient number, since it is larger than the sum of its proper divisors (6028641385).

66315055103 is a wasteful number, since it uses less digits than its factorization.

66315055103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6028641384.

The product of its (nonzero) digits is 40500, while the sum is 35.

The spelling of 66315055103 in words is "sixty-six billion, three hundred fifteen million, fifty-five thousand, one hundred three".