43148051985 has 32 divisors (see below), whose sum is σ = 74336849280. Its totient is φ = 21291527168.

The previous prime is 43148051983. The next prime is 43148051993. The reversal of 43148051985 is 58915084134.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 43148051985 - 2¹ = 43148051983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43148051983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1418922 + ... + 1449011.

It is an arithmetic number, because the mean of its divisors is an integer number (2323026540).

Almost surely, 2^43148051985 is an apocalyptic number.

It is an amenable number.

43148051985 is a deficient number, since it is larger than the sum of its proper divisors (31188797295).

43148051985 is a wasteful number, since it uses less digits than its factorization.

43148051985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868017.

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 43148051985 in words is "forty-three billion, one hundred forty-eight million, fifty-one thousand, nine hundred eighty-five".