65530103561 has 16 divisors (see below), whose sum is σ = 74294404800. Its totient is φ = 57298529088.

The previous prime is 65530103557. The next prime is 65530103591. The reversal of 65530103561 is 16530103556.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65530103561 - 2² = 65530103557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65530103591) 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, 3356135 + ... + 3375603.

It is an arithmetic number, because the mean of its divisors is an integer number (4643400300).

Almost surely, 2^65530103561 is an apocalyptic number.

It is an amenable number.

65530103561 is a deficient number, since it is larger than the sum of its proper divisors (8764301239).

65530103561 is a wasteful number, since it uses less digits than its factorization.

65530103561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33128.

The product of its (nonzero) digits is 40500, while the sum is 35.

The spelling of 65530103561 in words is "sixty-five billion, five hundred thirty million, one hundred three thousand, five hundred sixty-one".