11967403249 has 4 divisors (see below), whose sum is σ = 12671368164. Its totient is φ = 11263438336.

The previous prime is 11967403219. The next prime is 11967403313. The reversal of 11967403249 is 94230476911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94230476911 = 23 ⋅4096977257.

It can be written as a sum of positive squares in 2 ways, for example, as 5213850849 + 6753552400 = 72207^2 + 82180^2 .

It is a cyclic number.

It is not a de Polignac number, because 11967403249 - 2²¹ = 11965306097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11967403199 and 11967403208.

It is not an unprimeable number, because it can be changed into a prime (11967403219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351982432 + ... + 351982465.

It is an arithmetic number, because the mean of its divisors is an integer number (3167842041).

Almost surely, 2^11967403249 is an apocalyptic number.

It is an amenable number.

11967403249 is a deficient number, since it is larger than the sum of its proper divisors (703964915).

11967403249 is an equidigital number, since it uses as much as digits as its factorization.

11967403249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703964914.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 11967403249 in words is "eleven billion, nine hundred sixty-seven million, four hundred three thousand, two hundred forty-nine".