513366644465 has 16 divisors (see below), whose sum is σ = 637665324480. Its totient is φ = 396293419200.

The previous prime is 513366644411. The next prime is 513366644473. The reversal of 513366644465 is 564446663315.

It is not a de Polignac number, because 513366644465 - 2¹⁴ = 513366628081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820211 + ... + 1303640.

It is an arithmetic number, because the mean of its divisors is an integer number (39854082780).

Almost surely, 2^513366644465 is an apocalyptic number.

It is an amenable number.

513366644465 is a deficient number, since it is larger than the sum of its proper divisors (124298680015).

513366644465 is a wasteful number, since it uses less digits than its factorization.

513366644465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125552.

The product of its digits is 18662400, while the sum is 53.

The spelling of 513366644465 in words is "five hundred thirteen billion, three hundred sixty-six million, six hundred forty-four thousand, four hundred sixty-five".