65461214561 has 8 divisors (see below), whose sum is σ = 67056496320. Its totient is φ = 63869247792.

The previous prime is 65461214521. The next prime is 65461214587. The reversal of 65461214561 is 16541216456.

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

It is not a de Polignac number, because 65461214561 - 2¹⁴ = 65461198177 is a prime.

It is a super-2 number, since 2×65461214561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65461214521) 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, 788750 + ... + 867783.

It is an arithmetic number, because the mean of its divisors is an integer number (8382062040).

Almost surely, 2^65461214561 is an apocalyptic number.

It is an amenable number.

65461214561 is a deficient number, since it is larger than the sum of its proper divisors (1595281759).

65461214561 is a wasteful number, since it uses less digits than its factorization.

65461214561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657495.

The product of its digits is 172800, while the sum is 41.

The spelling of 65461214561 in words is "sixty-five billion, four hundred sixty-one million, two hundred fourteen thousand, five hundred sixty-one".