1293168138461 has 8 divisors (see below), whose sum is σ = 1293564204600. Its totient is φ = 1292772146688.

The previous prime is 1293168138443. The next prime is 1293168138491. The reversal of 1293168138461 is 1648318613921.

It can be written as a sum of positive squares in 4 ways, for example, as 248876265625 + 1044291872836 = 498875^2 + 1021906^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1293168138461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293168138491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59722565 + ... + 59744213.

It is an arithmetic number, because the mean of its divisors is an integer number (161695525575).

Almost surely, 2^{1293168138461} is an apocalyptic number.

It is an amenable number.

1293168138461 is a deficient number, since it is larger than the sum of its proper divisors (396066139).

1293168138461 is an equidigital number, since it uses as much as digits as its factorization.

1293168138461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37183.

The product of its digits is 1492992, while the sum is 53.

The spelling of 1293168138461 in words is "one trillion, two hundred ninety-three billion, one hundred sixty-eight million, one hundred thirty-eight thousand, four hundred sixty-one".