97649608321 has 4 divisors (see below), whose sum is σ = 98656305412. Its totient is φ = 96642911232.

The previous prime is 97649608307. The next prime is 97649608337. The reversal of 97649608321 is 12380694679.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62844974721 + 34804633600 = 250689^2 + 186560^2 .

It is a cyclic number.

It is not a de Polignac number, because 97649608321 - 2⁷ = 97649608193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97649608391) 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 3 ways as a sum of consecutive naturals, for example, 503348400 + ... + 503348593.

It is an arithmetic number, because the mean of its divisors is an integer number (24664076353).

Almost surely, 2^97649608321 is an apocalyptic number.

It is an amenable number.

97649608321 is a deficient number, since it is larger than the sum of its proper divisors (1006697091).

97649608321 is a wasteful number, since it uses less digits than its factorization.

97649608321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006697090.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 97649608321 in words is "ninety-seven billion, six hundred forty-nine million, six hundred eight thousand, three hundred twenty-one".