97896395521 has 8 divisors (see below), whose sum is σ = 98842875560. Its totient is φ = 96950794752.

The previous prime is 97896395501. The next prime is 97896395537. The reversal of 97896395521 is 12559369879.

It can be written as a sum of positive squares in 4 ways, for example, as 6396800400 + 91499595121 = 79980^2 + 302489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97896395521 - 2⁵ = 97896395489 is a prime.

It is a super-2 number, since 2×97896395521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97896395501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5041 + ... + 442513.

It is an arithmetic number, because the mean of its divisors is an integer number (12355359445).

Almost surely, 2^97896395521 is an apocalyptic number.

It is an amenable number.

97896395521 is a deficient number, since it is larger than the sum of its proper divisors (946480039).

97896395521 is a wasteful number, since it uses less digits than its factorization.

97896395521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439635.

The product of its digits is 36741600, while the sum is 64.

The spelling of 97896395521 in words is "ninety-seven billion, eight hundred ninety-six million, three hundred ninety-five thousand, five hundred twenty-one".