172153547857 has 2 divisors, whose sum is σ = 172153547858. Its totient is φ = 172153547856.

The previous prime is 172153547851. The next prime is 172153547899. The reversal of 172153547857 is 758745351271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167543681041 + 4609866816 = 409321^2 + 67896^2 .

It is an emirp because it is prime and its reverse (758745351271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172153547857 - 2²⁷ = 172019330129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172153547798 and 172153547807.

It is not a weakly prime, because it can be changed into another prime (172153547851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86076773928 + 86076773929.

It is an arithmetic number, because the mean of its divisors is an integer number (86076773929).

Almost surely, 2^172153547857 is an apocalyptic number.

It is an amenable number.

172153547857 is a deficient number, since it is larger than the sum of its proper divisors (1).

172153547857 is an equidigital number, since it uses as much as digits as its factorization.

172153547857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8232000, while the sum is 55.

The spelling of 172153547857 in words is "one hundred seventy-two billion, one hundred fifty-three million, five hundred forty-seven thousand, eight hundred fifty-seven".