985498621552537 has 2 divisors, whose sum is σ = 985498621552538. Its totient is φ = 985498621552536.

The previous prime is 985498621552483. The next prime is 985498621552651. The reversal of 985498621552537 is 735255126894589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 951219341320336 + 34279280232201 = 30841844^2 + 5854851^2 .

It is a cyclic number.

It is not a de Polignac number, because 985498621552537 - 2³¹ = 985496474068889 is a prime.

It is a super-2 number, since 2×985498621552537² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (985498621522537) 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, 492749310776268 + 492749310776269.

It is an arithmetic number, because the mean of its divisors is an integer number (492749310776269).

Almost surely, 2^{985498621552537} is an apocalyptic number.

It is an amenable number.

985498621552537 is a deficient number, since it is larger than the sum of its proper divisors (1).

985498621552537 is an equidigital number, since it uses as much as digits as its factorization.

985498621552537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840000, while the sum is 79.

The spelling of 985498621552537 in words is "nine hundred eighty-five trillion, four hundred ninety-eight billion, six hundred twenty-one million, five hundred fifty-two thousand, five hundred thirty-seven".