6543449753537 has 8 divisors (see below), whose sum is σ = 6590596393920. Its totient is φ = 6496304134320.

The previous prime is 6543449753471. The next prime is 6543449753587. The reversal of 6543449753537 is 7353579443456.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6543449753537 - 2¹⁶ = 6543449688001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6543449753587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16599587 + ... + 16989207.

It is an arithmetic number, because the mean of its divisors is an integer number (823824549240).

Almost surely, 2^{6543449753537} is an apocalyptic number.

It is an amenable number.

6543449753537 is a deficient number, since it is larger than the sum of its proper divisors (47146640383).

6543449753537 is a wasteful number, since it uses less digits than its factorization.

6543449753537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510583.

The product of its digits is 571536000, while the sum is 65.

The spelling of 6543449753537 in words is "six trillion, five hundred forty-three billion, four hundred forty-nine million, seven hundred fifty-three thousand, five hundred thirty-seven".