6255719379857 has 2 divisors, whose sum is σ = 6255719379858. Its totient is φ = 6255719379856.

The previous prime is 6255719379781. The next prime is 6255719379883. The reversal of 6255719379857 is 7589739175526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5005708174336 + 1250011205521 = 2237344^2 + 1118039^2 .

It is a cyclic number.

It is not a de Polignac number, because 6255719379857 - 2¹² = 6255719375761 is a prime.

It is not a weakly prime, because it can be changed into another prime (6255719379887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3127859689928 + 3127859689929.

It is an arithmetic number, because the mean of its divisors is an integer number (3127859689929).

Almost surely, 2^{6255719379857} is an apocalyptic number.

It is an amenable number.

6255719379857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6255719379857 is an equidigital number, since it uses as much as digits as its factorization.

6255719379857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1000188000, while the sum is 74.

The spelling of 6255719379857 in words is "six trillion, two hundred fifty-five billion, seven hundred nineteen million, three hundred seventy-nine thousand, eight hundred fifty-seven".