66102763407 has 4 divisors (see below), whose sum is σ = 88137017880. Its totient is φ = 44068508936.

The previous prime is 66102763369. The next prime is 66102763423. The reversal of 66102763407 is 70436720166.

It is a happy number.

66102763407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66102763407 - 2¹⁴ = 66102747023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66102763457) 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, 11017127232 + ... + 11017127237.

It is an arithmetic number, because the mean of its divisors is an integer number (22034254470).

Almost surely, 2^66102763407 is an apocalyptic number.

66102763407 is a deficient number, since it is larger than the sum of its proper divisors (22034254473).

66102763407 is a wasteful number, since it uses less digits than its factorization.

66102763407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22034254472.

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 66102763407 in words is "sixty-six billion, one hundred two million, seven hundred sixty-three thousand, four hundred seven".