11941819569 has 12 divisors (see below), whose sum is σ = 17373392400. Its totient is φ = 7903937304.

The previous prime is 11941819559. The next prime is 11941819579. The reversal of 11941819569 is 96591814911.

It is an interprime number because it is at equal distance from previous prime (11941819559) and next prime (11941819579).

It is not a de Polignac number, because 11941819569 - 2⁸ = 11941819313 is a prime.

It is a super-2 number, since 2×11941819569² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11941819559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4771659 + ... + 4774160.

It is an arithmetic number, because the mean of its divisors is an integer number (1447782700).

Almost surely, 2^11941819569 is an apocalyptic number.

It is an amenable number.

11941819569 is a deficient number, since it is larger than the sum of its proper divisors (5431572831).

11941819569 is a wasteful number, since it uses less digits than its factorization.

11941819569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9545964 (or 9545961 counting only the distinct ones).

The product of its digits is 699840, while the sum is 54.

The spelling of 11941819569 in words is "eleven billion, nine hundred forty-one million, eight hundred nineteen thousand, five hundred sixty-nine".