11444203778 has 16 divisors (see below), whose sum is σ = 19940253504. Its totient is φ = 4824254160.

The previous prime is 11444203777. The next prime is 11444203819. The reversal of 11444203778 is 87730244411.

It is a super-2 number, since 2×11444203778² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11444203777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6699500 + ... + 6701207.

It is an arithmetic number, because the mean of its divisors is an integer number (1246265844).

Almost surely, 2^11444203778 is an apocalyptic number.

11444203778 is a deficient number, since it is larger than the sum of its proper divisors (8496049726).

11444203778 is a wasteful number, since it uses less digits than its factorization.

11444203778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13400777.

The product of its (nonzero) digits is 150528, while the sum is 41.

The spelling of 11444203778 in words is "eleven billion, four hundred forty-four million, two hundred three thousand, seven hundred seventy-eight".