11685967441 has 4 divisors (see below), whose sum is σ = 11700377584. Its totient is φ = 11671557300.

The previous prime is 11685967429. The next prime is 11685967453. The reversal of 11685967441 is 14476958611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14476958611 = 163 ⋅88815697.

It is an interprime number because it is at equal distance from previous prime (11685967429) and next prime (11685967453).

It is a cyclic number.

It is not a de Polignac number, because 11685967441 - 2¹⁷ = 11685836369 is a prime.

It is a super-2 number, since 2×11685967441² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11685967411) 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, 7203855 + ... + 7205476.

It is an arithmetic number, because the mean of its divisors is an integer number (2925094396).

Almost surely, 2^11685967441 is an apocalyptic number.

It is an amenable number.

11685967441 is a deficient number, since it is larger than the sum of its proper divisors (14410143).

11685967441 is an equidigital number, since it uses as much as digits as its factorization.

11685967441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14410142.

The product of its digits is 1451520, while the sum is 52.

The spelling of 11685967441 in words is "eleven billion, six hundred eighty-five million, nine hundred sixty-seven thousand, four hundred forty-one".