11135540440 has 16 divisors (see below), whose sum is σ = 25054966080. Its totient is φ = 4454216160.

The previous prime is 11135540399. The next prime is 11135540441. The reversal of 11135540440 is 4404553111.

It is a junction number, because it is equal to n+sod(n) for n = 11135540399 and 11135540408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11135540441) 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, 139194216 + ... + 139194295.

It is an arithmetic number, because the mean of its divisors is an integer number (1565935380).

Almost surely, 2^11135540440 is an apocalyptic number.

11135540440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11135540440 is an abundant number, since it is smaller than the sum of its proper divisors (13919425640).

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

11135540440 is a wasteful number, since it uses less digits than its factorization.

11135540440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278388522 (or 278388518 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 11135540440 in words is "eleven billion, one hundred thirty-five million, five hundred forty thousand, four hundred forty".