3244720044638 has 16 divisors (see below), whose sum is σ = 4927386114000. Its totient is φ = 1602271233216.

The previous prime is 3244720044637. The next prime is 3244720044641. The reversal of 3244720044638 is 8364400274423.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3244720044592 and 3244720044601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3244720044637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2814263 + ... + 3795986.

It is an arithmetic number, because the mean of its divisors is an integer number (307961632125).

Almost surely, 2^{3244720044638} is an apocalyptic number.

3244720044638 is a deficient number, since it is larger than the sum of its proper divisors (1682666069362).

3244720044638 is a wasteful number, since it uses less digits than its factorization.

3244720044638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6613291.

The product of its (nonzero) digits is 3096576, while the sum is 47.

The spelling of 3244720044638 in words is "three trillion, two hundred forty-four billion, seven hundred twenty million, forty-four thousand, six hundred thirty-eight".