226401566640 has 40 divisors (see below), whose sum is σ = 701844857328. Its totient is φ = 60373751040.

The previous prime is 226401566639. The next prime is 226401566653. The reversal of 226401566640 is 46665104622.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 226401566592 and 226401566601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471669691 + ... + 471670170.

Almost surely, 2^226401566640 is an apocalyptic number.

226401566640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226401566640 is an abundant number, since it is smaller than the sum of its proper divisors (475443290688).

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

226401566640 is a wasteful number, since it uses less digits than its factorization.

226401566640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943339877 (or 943339871 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 226401566640 in words is "two hundred twenty-six billion, four hundred one million, five hundred sixty-six thousand, six hundred forty".