6557271613523 has 32 divisors (see below), whose sum is σ = 7174385270784. Its totient is φ = 5969337679872.

The previous prime is 6557271613483. The next prime is 6557271613537. The reversal of 6557271613523 is 3253161727556.

It is a cyclic number.

It is not a de Polignac number, because 6557271613523 - 2²⁰ = 6557270564947 is a prime.

It is a super-2 number, since 2×6557271613523² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6557271613553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25952840 + ... + 26204282.

It is an arithmetic number, because the mean of its divisors is an integer number (224199539712).

Almost surely, 2^{6557271613523} is an apocalyptic number.

6557271613523 is a deficient number, since it is larger than the sum of its proper divisors (617113657261).

6557271613523 is a wasteful number, since it uses less digits than its factorization.

6557271613523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251891.

The product of its digits is 7938000, while the sum is 53.

The spelling of 6557271613523 in words is "six trillion, five hundred fifty-seven billion, two hundred seventy-one million, six hundred thirteen thousand, five hundred twenty-three".