4644181786406 has 32 divisors (see below), whose sum is σ = 7144026065568. Its totient is φ = 2263528189440.

The previous prime is 4644181786367. The next prime is 4644181786411. The reversal of 4644181786406 is 6046871814464.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147949445 + ... + 147980831.

It is an arithmetic number, because the mean of its divisors is an integer number (223250814549).

Almost surely, 2^{4644181786406} is an apocalyptic number.

4644181786406 is a deficient number, since it is larger than the sum of its proper divisors (2499844279162).

4644181786406 is a wasteful number, since it uses less digits than its factorization.

4644181786406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42296.

The product of its (nonzero) digits is 24772608, while the sum is 59.

The spelling of 4644181786406 in words is "four trillion, six hundred forty-four billion, one hundred eighty-one million, seven hundred eighty-six thousand, four hundred six".