400513242617 has 2 divisors, whose sum is σ = 400513242618. Its totient is φ = 400513242616.

The previous prime is 400513242587. The next prime is 400513242629. The reversal of 400513242617 is 716242315004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239885427961 + 160627814656 = 489781^2 + 400784^2 .

It is a cyclic number.

It is not a de Polignac number, because 400513242617 - 2⁸ = 400513242361 is a prime.

It is not a weakly prime, because it can be changed into another prime (400513242637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200256621308 + 200256621309.

It is an arithmetic number, because the mean of its divisors is an integer number (200256621309).

Almost surely, 2^400513242617 is an apocalyptic number.

It is an amenable number.

400513242617 is a deficient number, since it is larger than the sum of its proper divisors (1).

400513242617 is an equidigital number, since it uses as much as digits as its factorization.

400513242617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 400513242617 in words is "four hundred billion, five hundred thirteen million, two hundred forty-two thousand, six hundred seventeen".