11421044520 has 64 divisors (see below), whose sum is σ = 34278336000. Its totient is φ = 3044260608.

The previous prime is 11421044507. The next prime is 11421044639. The reversal of 11421044520 is 2544012411.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 266761 + ... + 306599.

It is an arithmetic number, because the mean of its divisors is an integer number (535599000).

Almost surely, 2^11421044520 is an apocalyptic number.

11421044520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11421044520 is an abundant number, since it is smaller than the sum of its proper divisors (22857291480).

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

11421044520 is a wasteful number, since it uses less digits than its factorization.

11421044520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42242 (or 42238 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 11421044520 its reverse (2544012411), we get a palindrome (13965056931).

The spelling of 11421044520 in words is "eleven billion, four hundred twenty-one million, forty-four thousand, five hundred twenty".