520307696842 has 4 divisors (see below), whose sum is σ = 780461545266. Its totient is φ = 260153848420.

The previous prime is 520307696827. The next prime is 520307696879. The reversal of 520307696842 is 248696703025.

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., 517376665521 + 2931031321 = 719289^2 + 54139^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 520307696842.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130076924209 + ... + 130076924212.

Almost surely, 2^520307696842 is an apocalyptic number.

520307696842 is a deficient number, since it is larger than the sum of its proper divisors (260153848424).

520307696842 is a wasteful number, since it uses less digits than its factorization.

520307696842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260153848423.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 520307696842 in words is "five hundred twenty billion, three hundred seven million, six hundred ninety-six thousand, eight hundred forty-two".