6542586857 has 2 divisors, whose sum is σ = 6542586858. Its totient is φ = 6542586856.

The previous prime is 6542586851. The next prime is 6542586907. The reversal of 6542586857 is 7586852456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3345928336 + 3196658521 = 57844^2 + 56539^2 .

It is a cyclic number.

It is not a de Polignac number, because 6542586857 - 2⁶ = 6542586793 is a prime.

It is not a weakly prime, because it can be changed into another prime (6542586851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271293428 + 3271293429.

It is an arithmetic number, because the mean of its divisors is an integer number (3271293429).

Almost surely, 2^6542586857 is an apocalyptic number.

It is an amenable number.

6542586857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542586857 is an equidigital number, since it uses as much as digits as its factorization.

6542586857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128000, while the sum is 56.

The square root of 6542586857 is about 80886.2587650090. The cubic root of 6542586857 is about 1870.3225021670.

The spelling of 6542586857 in words is "six billion, five hundred forty-two million, five hundred eighty-six thousand, eight hundred fifty-seven".