11455220242 has 16 divisors (see below), whose sum is σ = 17971349760. Its totient is φ = 5465921472.

The previous prime is 11455220237. The next prime is 11455220261. The reversal of 11455220242 is 24202255411.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11455220242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267642 + ... + 307477.

It is an arithmetic number, because the mean of its divisors is an integer number (1123209360).

Almost surely, 2^11455220242 is an apocalyptic number.

11455220242 is a deficient number, since it is larger than the sum of its proper divisors (6516129518).

11455220242 is a wasteful number, since it uses less digits than its factorization.

11455220242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575577.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 11455220242 its reverse (24202255411), we get a palindrome (35657475653).

The spelling of 11455220242 in words is "eleven billion, four hundred fifty-five million, two hundred twenty thousand, two hundred forty-two".