520214827861 has 2 divisors, whose sum is σ = 520214827862. Its totient is φ = 520214827860.

The previous prime is 520214827819. The next prime is 520214827903. The reversal of 520214827861 is 168728412025.

It is a balanced prime because it is at equal distance from previous prime (520214827819) and next prime (520214827903).

It can be written as a sum of positive squares in only one way, i.e., 510768931761 + 9445896100 = 714681^2 + 97190^2 .

It is a cyclic number.

It is not a de Polignac number, because 520214827861 - 2¹⁹ = 520214303573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520214827261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260107413930 + 260107413931.

It is an arithmetic number, because the mean of its divisors is an integer number (260107413931).

Almost surely, 2^520214827861 is an apocalyptic number.

It is an amenable number.

520214827861 is a deficient number, since it is larger than the sum of its proper divisors (1).

520214827861 is an equidigital number, since it uses as much as digits as its factorization.

520214827861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 520214827861 in words is "five hundred twenty billion, two hundred fourteen million, eight hundred twenty-seven thousand, eight hundred sixty-one".