6573449487957 has 8 divisors (see below), whose sum is σ = 9561381073440. Its totient is φ = 3983908780560.

The previous prime is 6573449487953. The next prime is 6573449487961. The reversal of 6573449487957 is 7597849443756.

It is an interprime number because it is at equal distance from previous prime (6573449487953) and next prime (6573449487961).

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

It is not a de Polignac number, because 6573449487957 - 2² = 6573449487953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6573449487953) 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, 99597719482 + ... + 99597719547.

It is an arithmetic number, because the mean of its divisors is an integer number (1195172634180).

Almost surely, 2^{6573449487957} is an apocalyptic number.

It is an amenable number.

6573449487957 is a deficient number, since it is larger than the sum of its proper divisors (2987931585483).

6573449487957 is a wasteful number, since it uses less digits than its factorization.

6573449487957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199195439043.

The product of its digits is 6401203200, while the sum is 78.

The spelling of 6573449487957 in words is "six trillion, five hundred seventy-three billion, four hundred forty-nine million, four hundred eighty-seven thousand, nine hundred fifty-seven".