66297836662723 has 4 divisors (see below), whose sum is σ = 66326825662240. Its totient is φ = 66268847663208.

The previous prime is 66297836662691. The next prime is 66297836662747. The reversal of 66297836662723 is 32726663879266.

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 66297836662723 - 2⁵ = 66297836662691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66297836662423) 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, 14494496328 + ... + 14494500901.

It is an arithmetic number, because the mean of its divisors is an integer number (16581706415560).

Almost surely, 2^{66297836662723} is an apocalyptic number.

66297836662723 is a deficient number, since it is larger than the sum of its proper divisors (28988999517).

66297836662723 is a wasteful number, since it uses less digits than its factorization.

66297836662723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28988999516.

The product of its digits is 1975228416, while the sum is 73.

The spelling of 66297836662723 in words is "sixty-six trillion, two hundred ninety-seven billion, eight hundred thirty-six million, six hundred sixty-two thousand, seven hundred twenty-three".