513356165642 has 4 divisors (see below), whose sum is σ = 770034248466. Its totient is φ = 256678082820.

The previous prime is 513356165603. The next prime is 513356165669. The reversal of 513356165642 is 246561653315.

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., 494196346081 + 19159819561 = 702991^2 + 138419^2 .

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 as a sum of consecutive naturals, namely, 128339041409 + ... + 128339041412.

Almost surely, 2^513356165642 is an apocalyptic number.

513356165642 is a deficient number, since it is larger than the sum of its proper divisors (256678082824).

513356165642 is a wasteful number, since it uses less digits than its factorization.

513356165642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256678082823.

The product of its digits is 1944000, while the sum is 47.

The spelling of 513356165642 in words is "five hundred thirteen billion, three hundred fifty-six million, one hundred sixty-five thousand, six hundred forty-two".