513512245534251 has 16 divisors (see below), whose sum is σ = 697896811058720. Its totient is φ = 335786407407360.

The previous prime is 513512245534241. The next prime is 513512245534331. The reversal of 513512245534251 is 152435542215315.

It is a happy number.

It is not a de Polignac number, because 513512245534251 - 2¹⁸ = 513512245272107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513512245534251.

It is not an unprimeable number, because it can be changed into a prime (513512245534241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6477321616 + ... + 6477400893.

It is an arithmetic number, because the mean of its divisors is an integer number (43618550691170).

Almost surely, 2^{513512245534251} is an apocalyptic number.

513512245534251 is a deficient number, since it is larger than the sum of its proper divisors (184384565524469).

513512245534251 is a wasteful number, since it uses less digits than its factorization.

513512245534251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12954722766.

The product of its digits is 3600000, while the sum is 48.

Adding to 513512245534251 its reverse (152435542215315), we get a palindrome (665947787749566).

The spelling of 513512245534251 in words is "five hundred thirteen trillion, five hundred twelve billion, two hundred forty-five million, five hundred thirty-four thousand, two hundred fifty-one".