97616536281 has 48 divisors (see below), whose sum is σ = 162920429568. Its totient is φ = 55663603200.

The previous prime is 97616536273. The next prime is 97616536321. The reversal of 97616536281 is 18263561679.

97616536281 is a `hidden beast` number, since 9 + 7 + 6 + 1 + 6 + 5 + 3 + 628 + 1 = 666.

It is not a de Polignac number, because 97616536281 - 2³ = 97616536273 is a prime.

It is a super-2 number, since 2×97616536281² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97616536261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6669151 + ... + 6683771.

It is an arithmetic number, because the mean of its divisors is an integer number (3394175616).

Almost surely, 2^97616536281 is an apocalyptic number.

It is an amenable number.

97616536281 is a deficient number, since it is larger than the sum of its proper divisors (65303893287).

97616536281 is a wasteful number, since it uses less digits than its factorization.

97616536281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18622 (or 18619 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 97616536281 in words is "ninety-seven billion, six hundred sixteen million, five hundred thirty-six thousand, two hundred eighty-one".