43643142099 has 12 divisors (see below), whose sum is σ = 64506143416. Its totient is φ = 28418789952.

The previous prime is 43643142089. The next prime is 43643142143. The reversal of 43643142099 is 99024134634.

43643142099 is a `hidden beast` number, since 4 + 3 + 6 + 431 + 4 + 209 + 9 = 666.

It is not a de Polignac number, because 43643142099 - 2¹⁶ = 43643076563 is a prime.

It is a super-2 number, since 2×43643142099² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43643142019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56386102 + ... + 56386875.

Almost surely, 2^43643142099 is an apocalyptic number.

43643142099 is a deficient number, since it is larger than the sum of its proper divisors (20863001317).

43643142099 is a wasteful number, since it uses less digits than its factorization.

43643142099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112773026 (or 112773023 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 43643142099 in words is "forty-three billion, six hundred forty-three million, one hundred forty-two thousand, ninety-nine".