97659713081 has 18 divisors (see below), whose sum is σ = 119898036810. Its totient is φ = 79302609792.

The previous prime is 97659713029. The next prime is 97659713087. The reversal of 97659713081 is 18031795679.

It can be written as a sum of positive squares in only one way, i.e., 97272253225 + 387459856 = 311885^2 + 19684^2 .

It is not a de Polignac number, because 97659713081 - 2¹⁰ = 97659712057 is a prime.

It is a super-2 number, since 2×97659713081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97659713087) 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 in 17 ways as a sum of consecutive naturals, for example, 2742776 + ... + 2778153.

It is an arithmetic number, because the mean of its divisors is an integer number (6661002045).

Almost surely, 2^97659713081 is an apocalyptic number.

It is an amenable number.

97659713081 is a deficient number, since it is larger than the sum of its proper divisors (22238323729).

97659713081 is a wasteful number, since it uses less digits than its factorization.

97659713081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5520981 (or 5520955 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 56.

The spelling of 97659713081 in words is "ninety-seven billion, six hundred fifty-nine million, seven hundred thirteen thousand, eighty-one".