227661065856 has 512 divisors, whose sum is σ = 794914560000. Its totient is φ = 62793916416.

The previous prime is 227661065789. The next prime is 227661065873. The reversal of 227661065856 is 658560166722.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92581555 + ... + 92584013.

It is an arithmetic number, because the mean of its divisors is an integer number (1552567500).

Almost surely, 2^227661065856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 227661065856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397457280000).

227661065856 is an abundant number, since it is smaller than the sum of its proper divisors (567253494144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

227661065856 is a wasteful number, since it uses less digits than its factorization.

227661065856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621 (or 2603 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 227661065856 in words is "two hundred twenty-seven billion, six hundred sixty-one million, sixty-five thousand, eight hundred fifty-six".