513666314426 has 4 divisors (see below), whose sum is σ = 770499471642. Its totient is φ = 256833157212.

The previous prime is 513666314417. The next prime is 513666314467. The reversal of 513666314426 is 624413666315.

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

It can be written as a sum of positive squares in only one way, i.e., 418926090025 + 94740224401 = 647245^2 + 307799^2 .

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 as a sum of consecutive naturals, namely, 128416578605 + ... + 128416578608.

Almost surely, 2^513666314426 is an apocalyptic number.

513666314426 is a deficient number, since it is larger than the sum of its proper divisors (256833157216).

513666314426 is a wasteful number, since it uses less digits than its factorization.

513666314426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256833157215.

The product of its digits is 1866240, while the sum is 47.

The spelling of 513666314426 in words is "five hundred thirteen billion, six hundred sixty-six million, three hundred fourteen thousand, four hundred twenty-six".