11456213550 has 24 divisors (see below), whose sum is σ = 28411409976. Its totient is φ = 3054990240.

The previous prime is 11456213537. The next prime is 11456213579. The reversal of 11456213550 is 5531265411.

11456213550 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38187229 + ... + 38187528.

It is an arithmetic number, because the mean of its divisors is an integer number (1183808749).

Almost surely, 2^11456213550 is an apocalyptic number.

11456213550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11456213550 is an abundant number, since it is smaller than the sum of its proper divisors (16955196426).

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

11456213550 is a wasteful number, since it uses less digits than its factorization.

11456213550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76374772 (or 76374767 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 11456213550 its reverse (5531265411), we get a palindrome (16987478961).

The spelling of 11456213550 in words is "eleven billion, four hundred fifty-six million, two hundred thirteen thousand, five hundred fifty".