6405650043 has 16 divisors (see below), whose sum is σ = 9199360800. Its totient is φ = 3941293824.

The previous prime is 6405650023. The next prime is 6405650087. The reversal of 6405650043 is 3400565046.

It is not a de Polignac number, because 6405650043 - 2¹⁷ = 6405518971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6405649986 and 6405650013.

It is not an unprimeable number, because it can be changed into a prime (6405650023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358383 + ... + 375831.

It is an arithmetic number, because the mean of its divisors is an integer number (574960050).

Almost surely, 2^6405650043 is an apocalyptic number.

6405650043 is a deficient number, since it is larger than the sum of its proper divisors (2793710757).

6405650043 is a wasteful number, since it uses less digits than its factorization.

6405650043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26878.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 6405650043 is about 80035.3049784906. The cubic root of 6405650043 is about 1857.1817305892.

The spelling of 6405650043 in words is "six billion, four hundred five million, six hundred fifty thousand, forty-three".