520720314277 has 2 divisors, whose sum is σ = 520720314278. Its totient is φ = 520720314276.

The previous prime is 520720314241. The next prime is 520720314287. The reversal of 520720314277 is 772413027025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293242827361 + 227477486916 = 541519^2 + 476946^2 .

It is a cyclic number.

It is not a de Polignac number, because 520720314277 - 2²⁷ = 520586096549 is a prime.

It is a super-2 number, since 2×520720314277² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520720314287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260360157138 + 260360157139.

It is an arithmetic number, because the mean of its divisors is an integer number (260360157139).

Almost surely, 2^520720314277 is an apocalyptic number.

It is an amenable number.

520720314277 is a deficient number, since it is larger than the sum of its proper divisors (1).

520720314277 is an equidigital number, since it uses as much as digits as its factorization.

520720314277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164640, while the sum is 40.

The spelling of 520720314277 in words is "five hundred twenty billion, seven hundred twenty million, three hundred fourteen thousand, two hundred seventy-seven".