6516887357 has 2 divisors, whose sum is σ = 6516887358. Its totient is φ = 6516887356.

The previous prime is 6516887327. The next prime is 6516887369. The reversal of 6516887357 is 7537886156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5356190596 + 1160696761 = 73186^2 + 34069^2 .

It is a cyclic number.

It is not a de Polignac number, because 6516887357 - 2⁸ = 6516887101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6516887327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258443678 + 3258443679.

It is an arithmetic number, because the mean of its divisors is an integer number (3258443679).

Almost surely, 2^6516887357 is an apocalyptic number.

It is an amenable number.

6516887357 is a deficient number, since it is larger than the sum of its proper divisors (1).

6516887357 is an equidigital number, since it uses as much as digits as its factorization.

6516887357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8467200, while the sum is 56.

The square root of 6516887357 is about 80727.2404891930. The cubic root of 6516887357 is about 1867.8703922544.

The spelling of 6516887357 in words is "six billion, five hundred sixteen million, eight hundred eighty-seven thousand, three hundred fifty-seven".