43144355499 has 32 divisors (see below), whose sum is σ = 67322995200. Its totient is φ = 24566635296.

The previous prime is 43144355497. The next prime is 43144355519. The reversal of 43144355499 is 99455344134.

It is not a de Polignac number, because 43144355499 - 2¹ = 43144355497 is a prime.

It is a super-2 number, since 2×43144355499² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43144355497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217129 + ... + 365285.

It is an arithmetic number, because the mean of its divisors is an integer number (2103843600).

Almost surely, 2^43144355499 is an apocalyptic number.

43144355499 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

43144355499 is a deficient number, since it is larger than the sum of its proper divisors (24178639701).

43144355499 is a wasteful number, since it uses less digits than its factorization.

43144355499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148464 (or 148450 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 51.

The spelling of 43144355499 in words is "forty-three billion, one hundred forty-four million, three hundred fifty-five thousand, four hundred ninety-nine".