43218650040 has 32 divisors (see below), whose sum is σ = 129655950480. Its totient is φ = 11524973312.

The previous prime is 43218650017. The next prime is 43218650047. The reversal of 43218650040 is 4005681234.

It is a super-2 number, since 2×43218650040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43218649983 and 43218650010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43218650047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180077589 + ... + 180077828.

Almost surely, 2^43218650040 is an apocalyptic number.

43218650040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43218650040 is an abundant number, since it is smaller than the sum of its proper divisors (86437300440).

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

43218650040 is a wasteful number, since it uses less digits than its factorization.

43218650040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360155431 (or 360155427 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 43218650040 in words is "forty-three billion, two hundred eighteen million, six hundred fifty thousand, forty".