10981168493 has 2 divisors, whose sum is σ = 10981168494. Its totient is φ = 10981168492.

The previous prime is 10981168481. The next prime is 10981168511. The reversal of 10981168493 is 39486118901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6645999529 + 4335168964 = 81523^2 + 65842^2 .

It is a cyclic number.

It is not a de Polignac number, because 10981168493 - 2¹⁰ = 10981167469 is a prime.

It is a super-2 number, since 2×10981168493² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10981168423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5490584246 + 5490584247.

It is an arithmetic number, because the mean of its divisors is an integer number (5490584247).

Almost surely, 2^10981168493 is an apocalyptic number.

It is an amenable number.

10981168493 is a deficient number, since it is larger than the sum of its proper divisors (1).

10981168493 is an equidigital number, since it uses as much as digits as its factorization.

10981168493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 50.

The spelling of 10981168493 in words is "ten billion, nine hundred eighty-one million, one hundred sixty-eight thousand, four hundred ninety-three".