65566550145 has 16 divisors (see below), whose sum is σ = 104912556480. Its totient is φ = 34966801344.

The previous prime is 65566550143. The next prime is 65566550221. The reversal of 65566550145 is 54105566556.

It is not a de Polignac number, because 65566550145 - 2¹ = 65566550143 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65566550094 and 65566550103.

It is not an unprimeable number, because it can be changed into a prime (65566550143) 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, 162286 + ... + 396824.

It is an arithmetic number, because the mean of its divisors is an integer number (6557034780).

Almost surely, 2^65566550145 is an apocalyptic number.

It is an amenable number.

65566550145 is a deficient number, since it is larger than the sum of its proper divisors (39346006335).

65566550145 is a wasteful number, since it uses less digits than its factorization.

65566550145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253184.

The product of its (nonzero) digits is 2700000, while the sum is 48.

The spelling of 65566550145 in words is "sixty-five billion, five hundred sixty-six million, five hundred fifty thousand, one hundred forty-five".