4644474665226 has 64 divisors (see below), whose sum is σ = 10227559858560. Its totient is φ = 1394341724160.

The previous prime is 4644474665191. The next prime is 4644474665239. The reversal of 4644474665226 is 6225664744464.

It is a super-2 number, since 2×4644474665226² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4644474665226.

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, 70878510 + ... + 70944006.

It is an arithmetic number, because the mean of its divisors is an integer number (159805622790).

Almost surely, 2^{4644474665226} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4644474665226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5113779929280).

4644474665226 is an abundant number, since it is smaller than the sum of its proper divisors (5583085193334).

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

4644474665226 is a wasteful number, since it uses less digits than its factorization.

4644474665226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75479.

The product of its digits is 185794560, while the sum is 60.

The spelling of 4644474665226 in words is "four trillion, six hundred forty-four billion, four hundred seventy-four million, six hundred sixty-five thousand, two hundred twenty-six".