509472215563 has 4 divisors (see below), whose sum is σ = 512717261680. Its totient is φ = 506227169448.

The previous prime is 509472215471. The next prime is 509472215621. The reversal of 509472215563 is 365512274905.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365512274905 = 5 ⋅73102454981.

It is a cyclic number.

It is not a de Polignac number, because 509472215563 - 2²¹ = 509470118411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509472219563) 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, 1622522823 + ... + 1622523136.

It is an arithmetic number, because the mean of its divisors is an integer number (128179315420).

Almost surely, 2^509472215563 is an apocalyptic number.

509472215563 is a deficient number, since it is larger than the sum of its proper divisors (3245046117).

509472215563 is a wasteful number, since it uses less digits than its factorization.

509472215563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245046116.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 509472215563 in words is "five hundred nine billion, four hundred seventy-two million, two hundred fifteen thousand, five hundred sixty-three".