40011443420 has 48 divisors (see below), whose sum is σ = 91504183680. Its totient is φ = 14607453696.

The previous prime is 40011443401. The next prime is 40011443453. The reversal of 40011443420 is 2434411004.

It is a happy number.

40011443420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40011443420² (a number of 22 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 15 ways as a sum of consecutive naturals, for example, 841412 + ... + 887691.

It is an arithmetic number, because the mean of its divisors is an integer number (1906337160).

Almost surely, 2^40011443420 is an apocalyptic number.

It is an amenable number.

40011443420 is an abundant number, since it is smaller than the sum of its proper divisors (51492740260).

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

40011443420 is a wasteful number, since it uses less digits than its factorization.

40011443420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729214 (or 1729212 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 40011443420 its reverse (2434411004), we get a palindrome (42445854424).

The spelling of 40011443420 in words is "forty billion, eleven million, four hundred forty-three thousand, four hundred twenty".