11443120400 has 30 divisors (see below), whose sum is σ = 27492097722. Its totient is φ = 4577248000.

The previous prime is 11443120363. The next prime is 11443120421. The reversal of 11443120400 is 402134411.

It can be written as a sum of positive squares in 3 ways, for example, as 956541184 + 10486579216 = 30928^2 + 102404^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14303501 + ... + 14304300.

Almost surely, 2^11443120400 is an apocalyptic number.

11443120400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11443120400 is an abundant number, since it is smaller than the sum of its proper divisors (16048977322).

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

11443120400 is a wasteful number, since it uses less digits than its factorization.

11443120400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28607819 (or 28607808 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 11443120400 its reverse (402134411), we get a palindrome (11845254811).

The spelling of 11443120400 in words is "eleven billion, four hundred forty-three million, one hundred twenty thousand, four hundred".