11478551044 has 9 divisors (see below), whose sum is σ = 20087839317. Its totient is φ = 5739168384.

The previous prime is 11478551041. The next prime is 11478551069. The reversal of 11478551044 is 44015587411.

The square root of 11478551044 is 107138.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1172240644 + 10306310400 = 34238^2 + 101520^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11478550988 and 11478551006.

It is not an unprimeable number, because it can be changed into a prime (11478551041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 187492 + ... + 241060.

Almost surely, 2^11478551044 is an apocalyptic number.

11478551044 is the 107138-th square number.

It is an amenable number.

11478551044 is a deficient number, since it is larger than the sum of its proper divisors (8609288273).

11478551044 is an frugal number, since it uses more digits than its factorization.

11478551044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107142 (or 53571 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The spelling of 11478551044 in words is "eleven billion, four hundred seventy-eight million, five hundred fifty-one thousand, forty-four".