509641464646 has 16 divisors (see below), whose sum is σ = 788776099776. Its totient is φ = 246827886336.

The previous prime is 509641464637. The next prime is 509641464659. The reversal of 509641464646 is 646464146905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27937881 + ... + 27956116.

It is an arithmetic number, because the mean of its divisors is an integer number (49298506236).

Almost surely, 2^509641464646 is an apocalyptic number.

509641464646 is a deficient number, since it is larger than the sum of its proper divisors (279134635130).

509641464646 is a wasteful number, since it uses less digits than its factorization.

509641464646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55894143.

The product of its (nonzero) digits is 14929920, while the sum is 55.

The spelling of 509641464646 in words is "five hundred nine billion, six hundred forty-one million, four hundred sixty-four thousand, six hundred forty-six".