6643234279149 has 16 divisors (see below), whose sum is σ = 9587424413952. Its totient is φ = 4067392166208.

The previous prime is 6643234279139. The next prime is 6643234279273. The reversal of 6643234279149 is 9419724323466.

It is not a de Polignac number, because 6643234279149 - 2⁵ = 6643234279117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6643234279092 and 6643234279101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6643234279139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432325669 + ... + 432341034.

It is an arithmetic number, because the mean of its divisors is an integer number (599214025872).

Almost surely, 2^{6643234279149} is an apocalyptic number.

It is an amenable number.

6643234279149 is a deficient number, since it is larger than the sum of its proper divisors (2944190134803).

6643234279149 is a wasteful number, since it uses less digits than its factorization.

6643234279149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864666916.

The product of its digits is 47029248, while the sum is 60.

The spelling of 6643234279149 in words is "six trillion, six hundred forty-three billion, two hundred thirty-four million, two hundred seventy-nine thousand, one hundred forty-nine".