11451023320 has 32 divisors (see below), whose sum is σ = 28107058320. Its totient is φ = 4164008320.

The previous prime is 11451023293. The next prime is 11451023321. The reversal of 11451023320 is 2332015411.

It is a happy number.

It is a super-2 number, since 2×11451023320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 11451023291 and 11451023300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11451023321) 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, 13012087 + ... + 13012966.

Almost surely, 2^11451023320 is an apocalyptic number.

11451023320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11451023320 is an abundant number, since it is smaller than the sum of its proper divisors (16656035000).

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

11451023320 is a wasteful number, since it uses less digits than its factorization.

11451023320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26025075 (or 26025071 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 11451023320 its reverse (2332015411), we get a palindrome (13783038731).

The spelling of 11451023320 in words is "eleven billion, four hundred fifty-one million, twenty-three thousand, three hundred twenty".