53185123193 has 2 divisors, whose sum is σ = 53185123194. Its totient is φ = 53185123192.

The previous prime is 53185123129. The next prime is 53185123267. The reversal of 53185123193 is 39132158135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47111570704 + 6073552489 = 217052^2 + 77933^2 .

It is a cyclic number.

It is not a de Polignac number, because 53185123193 - 2⁶ = 53185123129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53185123193.

It is not a weakly prime, because it can be changed into another prime (53185123493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26592561596 + 26592561597.

It is an arithmetic number, because the mean of its divisors is an integer number (26592561597).

Almost surely, 2^53185123193 is an apocalyptic number.

It is an amenable number.

53185123193 is a deficient number, since it is larger than the sum of its proper divisors (1).

53185123193 is an equidigital number, since it uses as much as digits as its factorization.

53185123193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The spelling of 53185123193 in words is "fifty-three billion, one hundred eighty-five million, one hundred twenty-three thousand, one hundred ninety-three".