65204413666461 has 16 divisors (see below), whose sum is σ = 96696021198400. Its totient is φ = 43426008682704.

The previous prime is 65204413666409. The next prime is 65204413666489. The reversal of 65204413666461 is 16466631440256.

It is not a de Polignac number, because 65204413666461 - 2²⁵ = 65204380112029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65204413666398 and 65204413666407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65204413666061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1211095591 + ... + 1211149428.

It is an arithmetic number, because the mean of its divisors is an integer number (6043501324900).

Almost surely, 2^{65204413666461} is an apocalyptic number.

It is an amenable number.

65204413666461 is a deficient number, since it is larger than the sum of its proper divisors (31491607531939).

65204413666461 is a wasteful number, since it uses less digits than its factorization.

65204413666461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422246025 (or 2422246019 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 54.

The spelling of 65204413666461 in words is "sixty-five trillion, two hundred four billion, four hundred thirteen million, six hundred sixty-six thousand, four hundred sixty-one".