520136346165346 has 4 divisors (see below), whose sum is σ = 780204519248022. Its totient is φ = 260068173082672.

The previous prime is 520136346165329. The next prime is 520136346165347. The reversal of 520136346165346 is 643561643631025.

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., 349400023140025 + 170736323025321 = 18692245^2 + 13066611^2 .

It is not an unprimeable number, because it can be changed into a prime (520136346165347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130034086541335 + ... + 130034086541338.

Almost surely, 2^{520136346165346} is an apocalyptic number.

520136346165346 is a deficient number, since it is larger than the sum of its proper divisors (260068173082676).

520136346165346 is a wasteful number, since it uses less digits than its factorization.

520136346165346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260068173082675.

The product of its (nonzero) digits is 27993600, while the sum is 55.

The spelling of 520136346165346 in words is "five hundred twenty trillion, one hundred thirty-six billion, three hundred forty-six million, one hundred sixty-five thousand, three hundred forty-six".