6540036015444 has 48 divisors (see below), whose sum is σ = 15752595586560. Its totient is φ = 2109655451520.

The previous prime is 6540036015433. The next prime is 6540036015449. The reversal of 6540036015444 is 4445106300456.

It is a junction number, because it is equal to n+sod(n) for n = 6540036015396 and 6540036015405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540036015449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35317962 + ... + 35502654.

It is an arithmetic number, because the mean of its divisors is an integer number (328179074720).

Almost surely, 2^{6540036015444} is an apocalyptic number.

It is an amenable number.

6540036015444 is an abundant number, since it is smaller than the sum of its proper divisors (9212559571116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6540036015444 is a wasteful number, since it uses less digits than its factorization.

6540036015444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279920 (or 279918 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 6540036015444 in words is "six trillion, five hundred forty billion, thirty-six million, fifteen thousand, four hundred forty-four".