65040451265 has 8 divisors (see below), whose sum is σ = 78079516008. Its totient is φ = 52011711360.

The previous prime is 65040451253. The next prime is 65040451319. The reversal of 65040451265 is 56215404056.

It can be written as a sum of positive squares in 4 ways, for example, as 6387845776 + 58652605489 = 79924^2 + 242183^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-65040451265 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2567342 + ... + 2592551.

It is an arithmetic number, because the mean of its divisors is an integer number (9759939501).

Almost surely, 2^65040451265 is an apocalyptic number.

It is an amenable number.

65040451265 is a deficient number, since it is larger than the sum of its proper divisors (13039064743).

65040451265 is a wasteful number, since it uses less digits than its factorization.

65040451265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5162419.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 65040451265 in words is "sixty-five billion, forty million, four hundred fifty-one thousand, two hundred sixty-five".