1068316561537 has 2 divisors, whose sum is σ = 1068316561538. Its totient is φ = 1068316561536.

The previous prime is 1068316561463. The next prime is 1068316561549. The reversal of 1068316561537 is 7351656138601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1047185869041 + 21130692496 = 1023321^2 + 145364^2 .

It is a cyclic number.

It is not a de Polignac number, because 1068316561537 - 2²³ = 1068308172929 is a prime.

It is a super-2 number, since 2×1068316561537² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1068316861537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534158280768 + 534158280769.

It is an arithmetic number, because the mean of its divisors is an integer number (534158280769).

Almost surely, 2^{1068316561537} is an apocalyptic number.

It is an amenable number.

1068316561537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068316561537 is an equidigital number, since it uses as much as digits as its factorization.

1068316561537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 1068316561537 in words is "one trillion, sixty-eight billion, three hundred sixteen million, five hundred sixty-one thousand, five hundred thirty-seven".