509554640940 has 24 divisors (see below), whose sum is σ = 1426752994800. Its totient is φ = 135881237568.

The previous prime is 509554640939. The next prime is 509554640989. The reversal of 509554640940 is 49046455905.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4246288615 + ... + 4246288734.

It is an arithmetic number, because the mean of its divisors is an integer number (59448041450).

Almost surely, 2^509554640940 is an apocalyptic number.

It is an amenable number.

509554640940 is an abundant number, since it is smaller than the sum of its proper divisors (917198353860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

509554640940 is a wasteful number, since it uses less digits than its factorization.

509554640940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8492577361 (or 8492577359 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 509554640940 in words is "five hundred nine billion, five hundred fifty-four million, six hundred forty thousand, nine hundred forty".