6406136244539 has 4 divisors (see below), whose sum is σ = 6445437694056. Its totient is φ = 6366834795024.

The previous prime is 6406136244449. The next prime is 6406136244589. The reversal of 6406136244539 is 9354426316046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6406136244539 - 2²⁰ = 6406135195963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6406136244589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19650724514 + ... + 19650724839.

It is an arithmetic number, because the mean of its divisors is an integer number (1611359423514).

Almost surely, 2^{6406136244539} is an apocalyptic number.

6406136244539 is a deficient number, since it is larger than the sum of its proper divisors (39301449517).

6406136244539 is a wasteful number, since it uses less digits than its factorization.

6406136244539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39301449516.

The product of its (nonzero) digits is 11197440, while the sum is 53.

The spelling of 6406136244539 in words is "six trillion, four hundred six billion, one hundred thirty-six million, two hundred forty-four thousand, five hundred thirty-nine".