509845460051 has 4 divisors (see below), whose sum is σ = 509934150000. Its totient is φ = 509756770104.

The previous prime is 509845460017. The next prime is 509845460093. The reversal of 509845460051 is 150064548905.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-509845460051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 509845459978 and 509845460005.

It is not an unprimeable number, because it can be changed into a prime (509845160051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44336351 + ... + 44347848.

It is an arithmetic number, because the mean of its divisors is an integer number (127483537500).

Almost surely, 2^509845460051 is an apocalyptic number.

509845460051 is a deficient number, since it is larger than the sum of its proper divisors (88689949).

509845460051 is an equidigital number, since it uses as much as digits as its factorization.

509845460051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88689948.

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 509845460051 in words is "five hundred nine billion, eight hundred forty-five million, four hundred sixty thousand, fifty-one".