11404543420 has 96 divisors (see below), whose sum is σ = 25141552128. Its totient is φ = 4341157632.

The previous prime is 11404543417. The next prime is 11404543481. The reversal of 11404543420 is 2434540411.

It is a super-2 number, since 2×11404543420² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11438362 + ... + 11439358.

It is an arithmetic number, because the mean of its divisors is an integer number (261891168).

Almost surely, 2^11404543420 is an apocalyptic number.

11404543420 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 11404543420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12570776064).

11404543420 is an abundant number, since it is smaller than the sum of its proper divisors (13737008708).

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

11404543420 is a wasteful number, since it uses less digits than its factorization.

11404543420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The spelling of 11404543420 in words is "eleven billion, four hundred four million, five hundred forty-three thousand, four hundred twenty".