66353722275 has 24 divisors (see below), whose sum is σ = 112038971904. Its totient is φ = 34635700000.

The previous prime is 66353722273. The next prime is 66353722277. The reversal of 66353722275 is 57222735366.

It is an interprime number because it is at equal distance from previous prime (66353722273) and next prime (66353722277).

It is not a de Polignac number, because 66353722275 - 2¹ = 66353722273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66353722273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9408351 + ... + 9415400.

It is an arithmetic number, because the mean of its divisors is an integer number (4668290496).

Almost surely, 2^66353722275 is an apocalyptic number.

66353722275 is a deficient number, since it is larger than the sum of its proper divisors (45685249629).

66353722275 is a wasteful number, since it uses less digits than its factorization.

66353722275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18823811 (or 18823806 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 48.

The spelling of 66353722275 in words is "sixty-six billion, three hundred fifty-three million, seven hundred twenty-two thousand, two hundred seventy-five".