43424365840 has 20 divisors (see below), whose sum is σ = 100961650764. Its totient is φ = 17369746304.

The previous prime is 43424365813. The next prime is 43424365903. The reversal of 43424365840 is 4856342434.

It can be written as a sum of positive squares in 2 ways, for example, as 6689276944 + 36735088896 = 81788^2 + 191664^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271402207 + ... + 271402366.

Almost surely, 2^43424365840 is an apocalyptic number.

43424365840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43424365840 is an abundant number, since it is smaller than the sum of its proper divisors (57537284924).

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

43424365840 is a wasteful number, since it uses less digits than its factorization.

43424365840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542804586 (or 542804580 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 43.

The spelling of 43424365840 in words is "forty-three billion, four hundred twenty-four million, three hundred sixty-five thousand, eight hundred forty".