65066056550149 has 4 divisors (see below), whose sum is σ = 65208433041964. Its totient is φ = 64923680058336.

The previous prime is 65066056550123. The next prime is 65066056550153. The reversal of 65066056550149 is 94105565066056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24810610050625 + 40255446499524 = 4981025^2 + 6344718^2 .

It is a cyclic number.

It is not a de Polignac number, because 65066056550149 - 2⁷ = 65066056550021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65066056550093 and 65066056550102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65066056500149) 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, 71188245222 + ... + 71188246135.

It is an arithmetic number, because the mean of its divisors is an integer number (16302108260491).

Almost surely, 2^{65066056550149} is an apocalyptic number.

It is an amenable number.

65066056550149 is a deficient number, since it is larger than the sum of its proper divisors (142376491815).

65066056550149 is a wasteful number, since it uses less digits than its factorization.

65066056550149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142376491814.

The product of its (nonzero) digits is 29160000, while the sum is 58.

The spelling of 65066056550149 in words is "sixty-five trillion, sixty-six billion, fifty-six million, five hundred fifty thousand, one hundred forty-nine".