520342737522365 has 16 divisors (see below), whose sum is σ = 661240736257968. Its totient is φ = 391728583689216.

The previous prime is 520342737522359. The next prime is 520342737522427. The reversal of 520342737522365 is 563225737243025.

It can be written as a sum of positive squares in 8 ways, for example, as 104566699317796 + 415776038204569 = 10225786^2 + 20390587^2 .

It is a cyclic number.

It is not a de Polignac number, because 520342737522365 - 2⁴⁸ = 238867760811709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520342737522365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459503582 + ... + 460634591.

It is an arithmetic number, because the mean of its divisors is an integer number (41327546016123).

Almost surely, 2^{520342737522365} is an apocalyptic number.

It is an amenable number.

520342737522365 is a deficient number, since it is larger than the sum of its proper divisors (140897998735603).

520342737522365 is a wasteful number, since it uses less digits than its factorization.

520342737522365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920144848.

The product of its (nonzero) digits is 63504000, while the sum is 56.

The spelling of 520342737522365 in words is "five hundred twenty trillion, three hundred forty-two billion, seven hundred thirty-seven million, five hundred twenty-two thousand, three hundred sixty-five".