66364060312505 has 32 divisors (see below), whose sum is σ = 82664610912000. Its totient is φ = 51085340051200.

The previous prime is 66364060312489. The next prime is 66364060312523. The reversal of 66364060312505 is 50521306046366.

It is not a de Polignac number, because 66364060312505 - 2⁴ = 66364060312489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66364060312505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226275446 + ... + 226568544.

It is an arithmetic number, because the mean of its divisors is an integer number (2583269091000).

Almost surely, 2^{66364060312505} is an apocalyptic number.

It is an amenable number.

66364060312505 is a deficient number, since it is larger than the sum of its proper divisors (16300550599495).

66364060312505 is a wasteful number, since it uses less digits than its factorization.

66364060312505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298465.

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 66364060312505 in words is "sixty-six trillion, three hundred sixty-four billion, sixty million, three hundred twelve thousand, five hundred five".