43193941640 has 16 divisors (see below), whose sum is σ = 97186368780. Its totient is φ = 17277576640.

The previous prime is 43193941613. The next prime is 43193941697. The reversal of 43193941640 is 4614939134.

It can be written as a sum of positive squares in 2 ways, for example, as 38611464004 + 4582477636 = 196498^2 + 67694^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43193941591 and 43193941600.

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, 539924231 + ... + 539924310.

Almost surely, 2^43193941640 is an apocalyptic number.

43193941640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43193941640 is an abundant number, since it is smaller than the sum of its proper divisors (53992427140).

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

43193941640 is a wasteful number, since it uses less digits than its factorization.

43193941640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079848552 (or 1079848548 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 43193941640 in words is "forty-three billion, one hundred ninety-three million, nine hundred forty-one thousand, six hundred forty".