2117477103857 has 2 divisors, whose sum is σ = 2117477103858. Its totient is φ = 2117477103856.

The previous prime is 2117477103829. The next prime is 2117477103869. The reversal of 2117477103857 is 7583017747112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2087920961296 + 29556142561 = 1444964^2 + 171919^2 .

It is a cyclic number.

It is not a de Polignac number, because 2117477103857 - 2²² = 2117472909553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2117477103799 and 2117477103808.

It is not a weakly prime, because it can be changed into another prime (2117477103817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058738551928 + 1058738551929.

It is an arithmetic number, because the mean of its divisors is an integer number (1058738551929).

Almost surely, 2^{2117477103857} is an apocalyptic number.

It is an amenable number.

2117477103857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2117477103857 is an equidigital number, since it uses as much as digits as its factorization.

2117477103857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304960, while the sum is 53.

The spelling of 2117477103857 in words is "two trillion, one hundred seventeen billion, four hundred seventy-seven million, one hundred three thousand, eight hundred fifty-seven".