65473445123 has 4 divisors (see below), whose sum is σ = 65475591600. Its totient is φ = 65471298648.

The previous prime is 65473445119. The next prime is 65473445153. The reversal of 65473445123 is 32154437456.

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

It is a cyclic number.

It is not a de Polignac number, because 65473445123 - 2² = 65473445119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65473445153) 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, 1026815 + ... + 1088712.

It is an arithmetic number, because the mean of its divisors is an integer number (16368897900).

Almost surely, 2^65473445123 is an apocalyptic number.

65473445123 is a deficient number, since it is larger than the sum of its proper divisors (2146477).

65473445123 is a wasteful number, since it uses less digits than its factorization.

65473445123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146476.

The product of its digits is 1209600, while the sum is 44.

The spelling of 65473445123 in words is "sixty-five billion, four hundred seventy-three million, four hundred forty-five thousand, one hundred twenty-three".