64834785138843 has 24 divisors (see below), whose sum is σ = 99497930610000. Its totient is φ = 40604823491904.

The previous prime is 64834785138797. The next prime is 64834785138911. The reversal of 64834785138843 is 34883158743846.

64834785138843 is a `hidden beast` number, since 6 + 4 + 8 + 34 + 78 + 513 + 8 + 8 + 4 + 3 = 666.

It is not a de Polignac number, because 64834785138843 - 2¹⁷ = 64834785007771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64834785138443) 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, 3356870593 + ... + 3356889906.

It is an arithmetic number, because the mean of its divisors is an integer number (4145747108750).

Almost surely, 2^{64834785138843} is an apocalyptic number.

64834785138843 is a deficient number, since it is larger than the sum of its proper divisors (34663145471157).

64834785138843 is a wasteful number, since it uses less digits than its factorization.

64834785138843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6713760571 (or 6713760568 counting only the distinct ones).

The product of its digits is 1486356480, while the sum is 72.

The spelling of 64834785138843 in words is "sixty-four trillion, eight hundred thirty-four billion, seven hundred eighty-five million, one hundred thirty-eight thousand, eight hundred forty-three".