6557152817 has 4 divisors (see below), whose sum is σ = 6558027840. Its totient is φ = 6556277796.

The previous prime is 6557152781. The next prime is 6557152853. The reversal of 6557152817 is 7182517556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6557152781) and next prime (6557152853).

It is a cyclic number.

It is not a de Polignac number, because 6557152817 - 2¹⁰ = 6557151793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6557152867) 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, 426173 + ... + 441290.

It is an arithmetic number, because the mean of its divisors is an integer number (1639506960).

Almost surely, 2^6557152817 is an apocalyptic number.

It is an amenable number.

6557152817 is a deficient number, since it is larger than the sum of its proper divisors (875023).

6557152817 is an equidigital number, since it uses as much as digits as its factorization.

6557152817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875022.

The product of its digits is 588000, while the sum is 47.

The square root of 6557152817 is about 80976.2484744755. The cubic root of 6557152817 is about 1871.7094586813.

The spelling of 6557152817 in words is "six billion, five hundred fifty-seven million, one hundred fifty-two thousand, eight hundred seventeen".