227440803681 has 24 divisors (see below), whose sum is σ = 404339208000. Its totient is φ = 119968775136.

The previous prime is 227440803677. The next prime is 227440803691. The reversal of 227440803681 is 186308044722.

It is a happy number.

227440803681 is a `hidden beast` number, since 2 + 27 + 440 + 80 + 36 + 81 = 666.

It is not a de Polignac number, because 227440803681 - 2² = 227440803677 is a prime.

It is a super-2 number, since 2×227440803681² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (227440803691) 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, 138851931 + ... + 138853568.

It is an arithmetic number, because the mean of its divisors is an integer number (16847467000).

Almost surely, 2^227440803681 is an apocalyptic number.

227440803681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

227440803681 is a deficient number, since it is larger than the sum of its proper divisors (176898404319).

227440803681 is a wasteful number, since it uses less digits than its factorization.

227440803681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277705525 (or 277705522 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 227440803681 in words is "two hundred twenty-seven billion, four hundred forty million, eight hundred three thousand, six hundred eighty-one".