89512545665437 has 2 divisors, whose sum is σ = 89512545665438. Its totient is φ = 89512545665436.

The previous prime is 89512545665399. The next prime is 89512545665467. The reversal of 89512545665437 is 73456654521598.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82905286194756 + 6607259470681 = 9105234^2 + 2570459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89512545665437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89512545665467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44756272832718 + 44756272832719.

It is an arithmetic number, because the mean of its divisors is an integer number (44756272832719).

Almost surely, 2^{89512545665437} is an apocalyptic number.

It is an amenable number.

89512545665437 is a deficient number, since it is larger than the sum of its proper divisors (1).

89512545665437 is an equidigital number, since it uses as much as digits as its factorization.

89512545665437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640000, while the sum is 70.

The spelling of 89512545665437 in words is "eighty-nine trillion, five hundred twelve billion, five hundred forty-five million, six hundred sixty-five thousand, four hundred thirty-seven".