11257740544 has 36 divisors (see below), whose sum is σ = 23793368004. Its totient is φ = 5297758208.

The previous prime is 11257740491. The next prime is 11257740553. The reversal of 11257740544 is 44504775211.

It can be written as a sum of positive squares in 2 ways, for example, as 6004390144 + 5253350400 = 77488^2 + 72480^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11257740497 and 11257740506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1289047 + ... + 1297750.

It is an arithmetic number, because the mean of its divisors is an integer number (660926889).

Almost surely, 2^11257740544 is an apocalyptic number.

It is an amenable number.

11257740544 is an abundant number, since it is smaller than the sum of its proper divisors (12535627460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11257740544 is an equidigital number, since it uses as much as digits as its factorization.

11257740544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586830 (or 2586816 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The spelling of 11257740544 in words is "eleven billion, two hundred fifty-seven million, seven hundred forty thousand, five hundred forty-four".