11929563493 has 4 divisors (see below), whose sum is σ = 12631302540. Its totient is φ = 11227824448.

The previous prime is 11929563449. The next prime is 11929563509. The reversal of 11929563493 is 39436592911.

11929563493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9983606724 + 1945956769 = 99918^2 + 44113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11929563493 is a prime.

It is a super-2 number, since 2×11929563493² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11929563493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11929563403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350869498 + ... + 350869531.

It is an arithmetic number, because the mean of its divisors is an integer number (3157825635).

Almost surely, 2^11929563493 is an apocalyptic number.

It is an amenable number.

11929563493 is a deficient number, since it is larger than the sum of its proper divisors (701739047).

11929563493 is an equidigital number, since it uses as much as digits as its factorization.

11929563493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701739046.

The product of its digits is 1574640, while the sum is 52.

The spelling of 11929563493 in words is "eleven billion, nine hundred twenty-nine million, five hundred sixty-three thousand, four hundred ninety-three".