513205952618 has 16 divisors (see below), whose sum is σ = 787610423040. Its totient is φ = 250724862000.

The previous prime is 513205952603. The next prime is 513205952659. The reversal of 513205952618 is 816259502315.

It is a super-2 number, since 2×513205952618² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13910738 + ... + 13947581.

It is an arithmetic number, because the mean of its divisors is an integer number (49225651440).

Almost surely, 2^513205952618 is an apocalyptic number.

513205952618 is a deficient number, since it is larger than the sum of its proper divisors (274404470422).

513205952618 is a wasteful number, since it uses less digits than its factorization.

513205952618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27858533.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 513205952618 in words is "five hundred thirteen billion, two hundred five million, nine hundred fifty-two thousand, six hundred eighteen".