11253212440 has 32 divisors (see below), whose sum is σ = 25416024480. Its totient is φ = 4484165632.

The previous prime is 11253212437. The next prime is 11253212447. The reversal of 11253212440 is 4421235211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11253212447) 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, 524329 + ... + 545368.

It is an arithmetic number, because the mean of its divisors is an integer number (794250765).

Almost surely, 2^11253212440 is an apocalyptic number.

11253212440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11253212440 is an abundant number, since it is smaller than the sum of its proper divisors (14162812040).

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

11253212440 is a wasteful number, since it uses less digits than its factorization.

11253212440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069971 (or 1069967 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 11253212440 its reverse (4421235211), we get a palindrome (15674447651).

The spelling of 11253212440 in words is "eleven billion, two hundred fifty-three million, two hundred twelve thousand, four hundred forty".