11305023540 has 48 divisors (see below), whose sum is σ = 31885140672. Its totient is φ = 2992665856.

The previous prime is 11305023481. The next prime is 11305023553. The reversal of 11305023540 is 4532050311.

It is a self number, because there is not a number n which added to its sum of digits gives 11305023540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 679434 + ... + 695873.

It is an arithmetic number, because the mean of its divisors is an integer number (664273764).

Almost surely, 2^11305023540 is an apocalyptic number.

11305023540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11305023540 is an abundant number, since it is smaller than the sum of its proper divisors (20580117132).

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

11305023540 is a wasteful number, since it uses less digits than its factorization.

11305023540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375456 (or 1375454 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 11305023540 its reverse (4532050311), we get a palindrome (15837073851).

The spelling of 11305023540 in words is "eleven billion, three hundred five million, twenty-three thousand, five hundred forty".