3216444642135 has 12 divisors (see below), whose sum is σ = 5575170713112. Its totient is φ = 1715437142448.

The previous prime is 3216444642077. The next prime is 3216444642137. The reversal of 3216444642135 is 5312464446123.

3216444642135 is a `hidden beast` number, since 3 + 2 + 16 + 44 + 464 + 2 + 135 = 666.

It is not a de Polignac number, because 3216444642135 - 2¹³ = 3216444633943 is a prime.

It is a super-2 number, since 2×3216444642135² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 71476547603 = 3216444642135 / (3 + 2 + 1 + 6 + 4 + 4 + 4 + 6 + 4 + 2 + 1 + 3 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3216444642137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35738273757 + ... + 35738273846.

It is an arithmetic number, because the mean of its divisors is an integer number (464597559426).

Almost surely, 2^{3216444642135} is an apocalyptic number.

3216444642135 is a deficient number, since it is larger than the sum of its proper divisors (2358726070977).

3216444642135 is a wasteful number, since it uses less digits than its factorization.

3216444642135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71476547614 (or 71476547611 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 45.

The spelling of 3216444642135 in words is "three trillion, two hundred sixteen billion, four hundred forty-four million, six hundred forty-two thousand, one hundred thirty-five".