6537578743428 has 12 divisors (see below), whose sum is σ = 15254350401360. Its totient is φ = 2179192914472.

The previous prime is 6537578743379. The next prime is 6537578743429. The reversal of 6537578743428 is 8243478757356.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (6537578743429) 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, 272399114298 + ... + 272399114321.

It is an arithmetic number, because the mean of its divisors is an integer number (1271195866780).

Almost surely, 2^{6537578743428} is an apocalyptic number.

It is an amenable number.

6537578743428 is an abundant number, since it is smaller than the sum of its proper divisors (8716771657932).

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

6537578743428 is a wasteful number, since it uses less digits than its factorization.

6537578743428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544798228626 (or 544798228624 counting only the distinct ones).

The product of its digits is 948326400, while the sum is 69.

The spelling of 6537578743428 in words is "six trillion, five hundred thirty-seven billion, five hundred seventy-eight million, seven hundred forty-three thousand, four hundred twenty-eight".