226637456640 has 144 divisors (see below), whose sum is σ = 827226814848. Its totient is φ = 51802841088.

The previous prime is 226637456627. The next prime is 226637456657. The reversal of 226637456640 is 46654736622.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4188847 + ... + 4242606.

Almost surely, 2^226637456640 is an apocalyptic number.

226637456640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226637456640 is an abundant number, since it is smaller than the sum of its proper divisors (600589358208).

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

226637456640 is an equidigital number, since it uses as much as digits as its factorization.

226637456640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8431484 (or 8431470 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 51.

The spelling of 226637456640 in words is "two hundred twenty-six billion, six hundred thirty-seven million, four hundred fifty-six thousand, six hundred forty".