11278864804 has 9 divisors (see below), whose sum is σ = 19738385121. Its totient is φ = 5639326200.

The previous prime is 11278864801. The next prime is 11278864811. The reversal of 11278864804 is 40846887211.

The square root of 11278864804 is 106202.

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., 9624002404 + 1654862400 = 98102^2 + 40680^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11278864801) 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, 185854 + ... + 238954.

Almost surely, 2^11278864804 is an apocalyptic number.

11278864804 is the 106202-nd square number.

It is an amenable number.

11278864804 is a deficient number, since it is larger than the sum of its proper divisors (8459520317).

11278864804 is an frugal number, since it uses more digits than its factorization.

11278864804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106206 (or 53103 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 49.

Multiplying 11278864804 by its sum of digits (49), we get a square (552664375396 = 743414²).

The spelling of 11278864804 in words is "eleven billion, two hundred seventy-eight million, eight hundred sixty-four thousand, eight hundred four".