66065710623 has 32 divisors (see below), whose sum is σ = 100302285312. Its totient is φ = 38288025600.

The previous prime is 66065710621. The next prime is 66065710663. The reversal of 66065710623 is 32601756066.

It is not a de Polignac number, because 66065710623 - 2¹ = 66065710621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66065710621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3190383 + ... + 3211023.

It is an arithmetic number, because the mean of its divisors is an integer number (3134446416).

Almost surely, 2^66065710623 is an apocalyptic number.

66065710623 is a deficient number, since it is larger than the sum of its proper divisors (34236574689).

66065710623 is a wasteful number, since it uses less digits than its factorization.

66065710623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24895.

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 66065710623 in words is "sixty-six billion, sixty-five million, seven hundred ten thousand, six hundred twenty-three".