509581223696 has 20 divisors (see below), whose sum is σ = 988203929100. Its totient is φ = 254560854912.

The previous prime is 509581223651. The next prime is 509581223699. The reversal of 509581223696 is 696322185905.

It can be written as a sum of positive squares in 2 ways, for example, as 71575511296 + 438005712400 = 267536^2 + 661820^2 .

It is not an unprimeable number, because it can be changed into a prime (509581223699) 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, 14341511 + ... + 14376998.

It is an arithmetic number, because the mean of its divisors is an integer number (49410196455).

Almost surely, 2^509581223696 is an apocalyptic number.

It is an amenable number.

509581223696 is a deficient number, since it is larger than the sum of its proper divisors (478622705404).

509581223696 is a wasteful number, since it uses less digits than its factorization.

509581223696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28719626 (or 28719620 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 509581223696 in words is "five hundred nine billion, five hundred eighty-one million, two hundred twenty-three thousand, six hundred ninety-six".