11453423520 has 384 divisors, whose sum is σ = 45409351680. Its totient is φ = 2357268480.

The previous prime is 11453423503. The next prime is 11453423563. The reversal of 11453423520 is 2532435411.

It is a super-4 number, since 4×11453423520⁴ (a number of 41 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4027219 + ... + 4030061.

It is an arithmetic number, because the mean of its divisors is an integer number (118253520).

Almost surely, 2^11453423520 is an apocalyptic number.

11453423520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11453423520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22704675840).

11453423520 is an abundant number, since it is smaller than the sum of its proper divisors (33955928160).

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

11453423520 is a wasteful number, since it uses less digits than its factorization.

11453423520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2980 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 11453423520 its reverse (2532435411), we get a palindrome (13985858931).

The spelling of 11453423520 in words is "eleven billion, four hundred fifty-three million, four hundred twenty-three thousand, five hundred twenty".