11552655643 has 6 divisors (see below), whose sum is σ = 12272198516. Its totient is φ = 10873087392.

The previous prime is 11552655637. The next prime is 11552655679. The reversal of 11552655643 is 34655625511.

It is a happy number.

It is not a de Polignac number, because 11552655643 - 2¹³ = 11552647451 is a prime.

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 11552655643.

It is not an unprimeable number, because it can be changed into a prime (11552655623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19987005 + ... + 19987582.

Almost surely, 2^11552655643 is an apocalyptic number.

11552655643 is a deficient number, since it is larger than the sum of its proper divisors (719542873).

11552655643 is an equidigital number, since it uses as much as digits as its factorization.

11552655643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39974621 (or 39974604 counting only the distinct ones).

The product of its digits is 540000, while the sum is 43.

The spelling of 11552655643 in words is "eleven billion, five hundred fifty-two million, six hundred fifty-five thousand, six hundred forty-three".