11555401416 has 64 divisors (see below), whose sum is σ = 31504569600. Its totient is φ = 3510494208.

The previous prime is 11555401397. The next prime is 11555401421. The reversal of 11555401416 is 61410455511.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209761 + ... + 259056.

It is an arithmetic number, because the mean of its divisors is an integer number (492258900).

Almost surely, 2^11555401416 is an apocalyptic number.

It is an amenable number.

11555401416 is an abundant number, since it is smaller than the sum of its proper divisors (19949168184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11555401416 is a wasteful number, since it uses less digits than its factorization.

11555401416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468918 (or 468914 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

Adding to 11555401416 its reverse (61410455511), we get a palindrome (72965856927).

The spelling of 11555401416 in words is "eleven billion, five hundred fifty-five million, four hundred one thousand, four hundred sixteen".