65051544513 has 4 divisors (see below), whose sum is σ = 86735392688. Its totient is φ = 43367696340.

The previous prime is 65051544499. The next prime is 65051544521. The reversal of 65051544513 is 31544515056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65051544513 - 2¹³ = 65051536321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65051544533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10841924083 + ... + 10841924088.

It is an arithmetic number, because the mean of its divisors is an integer number (21683848172).

Almost surely, 2^65051544513 is an apocalyptic number.

It is an amenable number.

65051544513 is a deficient number, since it is larger than the sum of its proper divisors (21683848175).

65051544513 is a wasteful number, since it uses less digits than its factorization.

65051544513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21683848174.

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 65051544513 in words is "sixty-five billion, fifty-one million, five hundred forty-four thousand, five hundred thirteen".