43287987965 has 16 divisors (see below), whose sum is σ = 52251609600. Its totient is φ = 34426492992.

The previous prime is 43287987929. The next prime is 43287987971. The reversal of 43287987965 is 56978978234.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 43287987965 - 2⁶ = 43287987901 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43287987895 and 43287987904.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4490771 + ... + 4500399.

It is an arithmetic number, because the mean of its divisors is an integer number (3265725600).

Almost surely, 2^43287987965 is an apocalyptic number.

It is an amenable number.

43287987965 is a deficient number, since it is larger than the sum of its proper divisors (8963621635).

43287987965 is a wasteful number, since it uses less digits than its factorization.

43287987965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14836.

The product of its digits is 182891520, while the sum is 68.

The spelling of 43287987965 in words is "forty-three billion, two hundred eighty-seven million, nine hundred eighty-seven thousand, nine hundred sixty-five".