11213255550544 has 40 divisors (see below), whose sum is σ = 21791412260352. Its totient is φ = 5589683602560.

The previous prime is 11213255550533. The next prime is 11213255550547. The reversal of 11213255550544 is 44505555231211.

It is a self number, because there is not a number n which added to its sum of digits gives 11213255550544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213255550547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9241662 + ... + 10384354.

Almost surely, 2^{11213255550544} is an apocalyptic number.

It is an amenable number.

11213255550544 is a deficient number, since it is larger than the sum of its proper divisors (10578156709808).

11213255550544 is a wasteful number, since it uses less digits than its factorization.

11213255550544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144555 (or 1144549 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 43.

The spelling of 11213255550544 in words is "eleven trillion, two hundred thirteen billion, two hundred fifty-five million, five hundred fifty thousand, five hundred forty-four".