43401504040 has 16 divisors (see below), whose sum is σ = 97653384180. Its totient is φ = 17360601600.

The previous prime is 43401503941. The next prime is 43401504071. The reversal of 43401504040 is 4040510434.

It can be written as a sum of positive squares in 2 ways, for example, as 43378059076 + 23444964 = 208274^2 + 4842^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43401503996 and 43401504014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542518761 + ... + 542518840.

Almost surely, 2^43401504040 is an apocalyptic number.

43401504040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43401504040 is an abundant number, since it is smaller than the sum of its proper divisors (54251880140).

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

43401504040 is a wasteful number, since it uses less digits than its factorization.

43401504040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085037612 (or 1085037608 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The spelling of 43401504040 in words is "forty-three billion, four hundred one million, five hundred four thousand, forty".