66227472265 has 32 divisors (see below), whose sum is σ = 84335126400. Its totient is φ = 49786513920.

The previous prime is 66227472217. The next prime is 66227472277. The reversal of 66227472265 is 56227472266.

It is a happy number.

It is not a de Polignac number, because 66227472265 - 2⁷ = 66227472137 is a prime.

It is a super-2 number, since 2×66227472265² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23146935 + ... + 23149795.

It is an arithmetic number, because the mean of its divisors is an integer number (2635472700).

Almost surely, 2^66227472265 is an apocalyptic number.

It is an amenable number.

66227472265 is a deficient number, since it is larger than the sum of its proper divisors (18107654135).

66227472265 is a wasteful number, since it uses less digits than its factorization.

66227472265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4777.

The product of its digits is 3386880, while the sum is 49.

Subtracting from 66227472265 its reverse (56227472266), we obtain a palindrome (9999999999).

The spelling of 66227472265 in words is "sixty-six billion, two hundred twenty-seven million, four hundred seventy-two thousand, two hundred sixty-five".