428072527517 has 2 divisors, whose sum is σ = 428072527518. Its totient is φ = 428072527516.

The previous prime is 428072527481. The next prime is 428072527523. The reversal of 428072527517 is 715725270824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259458815641 + 168613711876 = 509371^2 + 410626^2 .

It is a cyclic number.

It is not a de Polignac number, because 428072527517 - 2¹⁰ = 428072526493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428072527567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214036263758 + 214036263759.

It is an arithmetic number, because the mean of its divisors is an integer number (214036263759).

Almost surely, 2^428072527517 is an apocalyptic number.

It is an amenable number.

428072527517 is a deficient number, since it is larger than the sum of its proper divisors (1).

428072527517 is an equidigital number, since it uses as much as digits as its factorization.

428072527517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2195200, while the sum is 50.

The spelling of 428072527517 in words is "four hundred twenty-eight billion, seventy-two million, five hundred twenty-seven thousand, five hundred seventeen".