515213623316463 has 4 divisors (see below), whose sum is σ = 686951497755288. Its totient is φ = 343475748877640.

The previous prime is 515213623316417. The next prime is 515213623316489. The reversal of 515213623316463 is 364613326312515.

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

It is a cyclic number.

It is not a de Polignac number, because 515213623316463 - 2¹⁰ = 515213623315439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515213693316463) 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, 85868937219408 + ... + 85868937219413.

It is an arithmetic number, because the mean of its divisors is an integer number (171737874438822).

Almost surely, 2^{515213623316463} is an apocalyptic number.

515213623316463 is a deficient number, since it is larger than the sum of its proper divisors (171737874438825).

515213623316463 is a wasteful number, since it uses less digits than its factorization.

515213623316463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171737874438824.

The product of its digits is 6998400, while the sum is 51.

Adding to 515213623316463 its reverse (364613326312515), we get a palindrome (879826949628978).

The spelling of 515213623316463 in words is "five hundred fifteen trillion, two hundred thirteen billion, six hundred twenty-three million, three hundred sixteen thousand, four hundred sixty-three".