224521073640 has 128 divisors (see below), whose sum is σ = 764327232000. Its totient is φ = 58598394624.

The previous prime is 224521073629. The next prime is 224521073657. The reversal of 224521073640 is 46370125422.

224521073640 is a `hidden beast` number, since 2 + 2 + 4 + 5 + 2 + 1 + 0 + 7 + 3 + 640 = 666.

It is a super-3 number, since 3×224521073640³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 224521073595 and 224521073604.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2160835 + ... + 2262354.

It is an arithmetic number, because the mean of its divisors is an integer number (5971306500).

Almost surely, 2^224521073640 is an apocalyptic number.

224521073640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224521073640 is an abundant number, since it is smaller than the sum of its proper divisors (539806158360).

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

224521073640 is a wasteful number, since it uses less digits than its factorization.

224521073640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423256 (or 4423246 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 224521073640 in words is "two hundred twenty-four billion, five hundred twenty-one million, seventy-three thousand, six hundred forty".