11213786644 has 6 divisors (see below), whose sum is σ = 19624126634. Its totient is φ = 5606893320.

The previous prime is 11213786621. The next prime is 11213786663. The reversal of 11213786644 is 44668731211.

It can be written as a sum of positive squares in only one way, i.e., 10148547600 + 1065239044 = 100740^2 + 32638^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11213786644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401723327 + ... + 1401723334.

Almost surely, 2^11213786644 is an apocalyptic number.

It is an amenable number.

11213786644 is a deficient number, since it is larger than the sum of its proper divisors (8410339990).

11213786644 is a wasteful number, since it uses less digits than its factorization.

11213786644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803446665 (or 2803446663 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The spelling of 11213786644 in words is "eleven billion, two hundred thirteen million, seven hundred eighty-six thousand, six hundred forty-four".