4420626646644 has 72 divisors (see below), whose sum is σ = 12034203210120. Its totient is φ = 1360161718272.

The previous prime is 4420626646573. The next prime is 4420626646649. The reversal of 4420626646644 is 4466466260244.

4420626646644 is a `hidden beast` number, since 4 + 4 + 2 + 0 + 626 + 6 + 4 + 6 + 6 + 4 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 63337788900 + 4357288857744 = 251670^2 + 2087412^2 .

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4420626646649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28441012 + ... + 28596020.

Almost surely, 2^{4420626646644} is an apocalyptic number.

It is an amenable number.

4420626646644 is an abundant number, since it is smaller than the sum of its proper divisors (7613576563476).

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

4420626646644 is a wasteful number, since it uses less digits than its factorization.

4420626646644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215969 (or 215964 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 54.

The spelling of 4420626646644 in words is "four trillion, four hundred twenty billion, six hundred twenty-six million, six hundred forty-six thousand, six hundred forty-four".