16311363557 has 2 divisors, whose sum is σ = 16311363558. Its totient is φ = 16311363556.

The previous prime is 16311363547. The next prime is 16311363571. The reversal of 16311363557 is 75536311361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12876348676 + 3435014881 = 113474^2 + 58609^2 .

It is a cyclic number.

It is not a de Polignac number, because 16311363557 - 2⁶ = 16311363493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16311363547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8155681778 + 8155681779.

It is an arithmetic number, because the mean of its divisors is an integer number (8155681779).

Almost surely, 2^16311363557 is an apocalyptic number.

It is an amenable number.

16311363557 is a deficient number, since it is larger than the sum of its proper divisors (1).

16311363557 is an equidigital number, since it uses as much as digits as its factorization.

16311363557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170100, while the sum is 41.

The spelling of 16311363557 in words is "sixteen billion, three hundred eleven million, three hundred sixty-three thousand, five hundred fifty-seven".