65516011501 has 2 divisors, whose sum is σ = 65516011502. Its totient is φ = 65516011500.

The previous prime is 65516011471. The next prime is 65516011513. The reversal of 65516011501 is 10511061556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55147477225 + 10368534276 = 234835^2 + 101826^2 .

It is a cyclic number.

It is not a de Polignac number, because 65516011501 - 2⁷ = 65516011373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65516011591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32758005750 + 32758005751.

It is an arithmetic number, because the mean of its divisors is an integer number (32758005751).

Almost surely, 2^65516011501 is an apocalyptic number.

It is an amenable number.

65516011501 is a deficient number, since it is larger than the sum of its proper divisors (1).

65516011501 is an equidigital number, since it uses as much as digits as its factorization.

65516011501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 65516011501 in words is "sixty-five billion, five hundred sixteen million, eleven thousand, five hundred one".