8398357632065 has 8 divisors (see below), whose sum is σ = 10078535380968. Its totient is φ = 6718348624000.

The previous prime is 8398357632061. The next prime is 8398357632097. The reversal of 8398357632065 is 5602367538938.

It is a Cunningham number, because it is equal to 2897992²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 8398357632064 = 1^2 + 2897992^2 .

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

It is not a de Polignac number, because 8398357632065 - 2² = 8398357632061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8398357631992 and 8398357632010.

It is not an unprimeable number, because it can be changed into a prime (8398357632061) 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, 42075686 + ... + 42274815.

It is an arithmetic number, because the mean of its divisors is an integer number (1259816922621).

Almost surely, 2^{8398357632065} is an apocalyptic number.

It is an amenable number.

8398357632065 is a deficient number, since it is larger than the sum of its proper divisors (1680177748903).

8398357632065 is a wasteful number, since it uses less digits than its factorization.

8398357632065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84370419.

The product of its (nonzero) digits is 195955200, while the sum is 65.

The spelling of 8398357632065 in words is "eight trillion, three hundred ninety-eight billion, three hundred fifty-seven million, six hundred thirty-two thousand, sixty-five".