43109293690 has 32 divisors (see below), whose sum is σ = 78390406800. Its totient is φ = 17067456000.

The previous prime is 43109293679. The next prime is 43109293699. The reversal of 43109293690 is 9639290134.

It can be written as a sum of positive squares in 8 ways, for example, as 41878757449 + 1230536241 = 204643^2 + 35079^2 .

It is a super-2 number, since 2×43109293690² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43109293690.

It is not an unprimeable number, because it can be changed into a prime (43109293699) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4690900 + ... + 4700080.

Almost surely, 2^43109293690 is an apocalyptic number.

43109293690 is a deficient number, since it is larger than the sum of its proper divisors (35281113110).

43109293690 is a wasteful number, since it uses less digits than its factorization.

43109293690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13938.

The product of its (nonzero) digits is 314928, while the sum is 46.

The spelling of 43109293690 in words is "forty-three billion, one hundred nine million, two hundred ninety-three thousand, six hundred ninety".