226773736640 has 448 divisors, whose sum is σ = 638732832768. Its totient is φ = 75856281600.

The previous prime is 226773736601. The next prime is 226773736649. The reversal of 226773736640 is 46637377622.

It is not an unprimeable number, because it can be changed into a prime (226773736649) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 232111832 + ... + 232112808.

Almost surely, 2^226773736640 is an apocalyptic number.

226773736640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 226773736640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319366416384).

226773736640 is an abundant number, since it is smaller than the sum of its proper divisors (411959096128).

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

226773736640 is a wasteful number, since it uses less digits than its factorization.

226773736640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 53.

The spelling of 226773736640 in words is "two hundred twenty-six billion, seven hundred seventy-three million, seven hundred thirty-six thousand, six hundred forty".