11242551440 has 20 divisors (see below), whose sum is σ = 26138932284. Its totient is φ = 4497020544.

The previous prime is 11242551377. The next prime is 11242551443. The reversal of 11242551440 is 4415524211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4127291536 + 7115259904 = 64244^2 + 84352^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (11242551443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70265867 + ... + 70266026.

Almost surely, 2^11242551440 is an apocalyptic number.

11242551440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11242551440 is an abundant number, since it is smaller than the sum of its proper divisors (14896380844).

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

11242551440 is a wasteful number, since it uses less digits than its factorization.

11242551440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140531906 (or 140531900 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The spelling of 11242551440 in words is "eleven billion, two hundred forty-two million, five hundred fifty-one thousand, four hundred forty".