6858136477 has 2 divisors, whose sum is σ = 6858136478. Its totient is φ = 6858136476.

The previous prime is 6858136463. The next prime is 6858136489. The reversal of 6858136477 is 7746318586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4605115321 + 2253021156 = 67861^2 + 47466^2 .

It is a cyclic number.

It is not a de Polignac number, because 6858136477 - 2¹⁵ = 6858103709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6858106477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3429068238 + 3429068239.

It is an arithmetic number, because the mean of its divisors is an integer number (3429068239).

Almost surely, 2^6858136477 is an apocalyptic number.

It is an amenable number.

6858136477 is a deficient number, since it is larger than the sum of its proper divisors (1).

6858136477 is an equidigital number, since it uses as much as digits as its factorization.

6858136477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 55.

The square root of 6858136477 is about 82813.8664536320. The cubic root of 6858136477 is about 1899.9202623046.

The spelling of 6858136477 in words is "six billion, eight hundred fifty-eight million, one hundred thirty-six thousand, four hundred seventy-seven".