11253220540 has 24 divisors (see below), whose sum is σ = 23687913312. Its totient is φ = 4490592960.

The previous prime is 11253220487. The next prime is 11253220543. The reversal of 11253220540 is 4502235211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11253220543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659824 + ... + 676663.

It is an arithmetic number, because the mean of its divisors is an integer number (986996388).

Almost surely, 2^11253220540 is an apocalyptic number.

11253220540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11253220540 is an abundant number, since it is smaller than the sum of its proper divisors (12434692772).

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

11253220540 is a wasteful number, since it uses less digits than its factorization.

11253220540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336917 (or 1336915 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 11253220540 its reverse (4502235211), we get a palindrome (15755455751).

The spelling of 11253220540 in words is "eleven billion, two hundred fifty-three million, two hundred twenty thousand, five hundred forty".