11613212056 has 16 divisors (see below), whose sum is σ = 21781112400. Its totient is φ = 5804915424.

The previous prime is 11613212021. The next prime is 11613212063. The reversal of 11613212056 is 65021231611.

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, 181891 + ... + 237298.

It is an arithmetic number, because the mean of its divisors is an integer number (1361319525).

Almost surely, 2^11613212056 is an apocalyptic number.

It is an amenable number.

11613212056 is a deficient number, since it is larger than the sum of its proper divisors (10167900344).

11613212056 is a wasteful number, since it uses less digits than its factorization.

11613212056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422658 (or 422654 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 11613212056 its reverse (65021231611), we get a palindrome (76634443667).

The spelling of 11613212056 in words is "eleven billion, six hundred thirteen million, two hundred twelve thousand, fifty-six".