11561223446 has 8 divisors (see below), whose sum is σ = 17387115264. Its totient is φ = 5765518360.

The previous prime is 11561223407. The next prime is 11561223451. The reversal of 11561223446 is 64432216511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11561223446² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7545725 + ... + 7547256.

It is an arithmetic number, because the mean of its divisors is an integer number (2173389408).

Almost surely, 2^11561223446 is an apocalyptic number.

11561223446 is a deficient number, since it is larger than the sum of its proper divisors (5825891818).

11561223446 is a wasteful number, since it uses less digits than its factorization.

11561223446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15093366.

The product of its digits is 34560, while the sum is 35.

Adding to 11561223446 its reverse (64432216511), we get a palindrome (75993439957).

The spelling of 11561223446 in words is "eleven billion, five hundred sixty-one million, two hundred twenty-three thousand, four hundred forty-six".