11121389764 has 27 divisors (see below), whose sum is σ = 19782388143. Its totient is φ = 5470739208.

The previous prime is 11121389759. The next prime is 11121389767. The reversal of 11121389764 is 46798312111.

It is a happy number.

The square root of 11121389764 is 105458.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11121389764.

It is not an unprimeable number, because it can be changed into a prime (11121389767) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14130979 + ... + 14131765.

Almost surely, 2^11121389764 is an apocalyptic number.

11121389764 is the 105458-th square number.

It is an amenable number.

11121389764 is a deficient number, since it is larger than the sum of its proper divisors (8660998379).

11121389764 is an frugal number, since it uses more digits than its factorization.

11121389764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712 (or 856 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The spelling of 11121389764 in words is "eleven billion, one hundred twenty-one million, three hundred eighty-nine thousand, seven hundred sixty-four".