53349491680789 has 2 divisors, whose sum is σ = 53349491680790. Its totient is φ = 53349491680788.

The previous prime is 53349491680777. The next prime is 53349491680799. The reversal of 53349491680789 is 98708619494335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44946740118289 + 8402751562500 = 6704233^2 + 2898750^2 .

It is a cyclic number.

It is not a de Polignac number, because 53349491680789 - 2²⁵ = 53349458126357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53349491680799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26674745840394 + 26674745840395.

It is an arithmetic number, because the mean of its divisors is an integer number (26674745840395).

Almost surely, 2^{53349491680789} is an apocalyptic number.

It is an amenable number.

53349491680789 is a deficient number, since it is larger than the sum of its proper divisors (1).

53349491680789 is an equidigital number, since it uses as much as digits as its factorization.

53349491680789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1410877440, while the sum is 76.

The spelling of 53349491680789 in words is "fifty-three trillion, three hundred forty-nine billion, four hundred ninety-one million, six hundred eighty thousand, seven hundred eighty-nine".