43381730505 has 16 divisors (see below), whose sum is σ = 70446752064. Its totient is φ = 22791595200.

The previous prime is 43381730503. The next prime is 43381730543. The reversal of 43381730505 is 50503718334.

It is not a de Polignac number, because 43381730505 - 2¹ = 43381730503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43381730503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21581946 + ... + 21583955.

It is an arithmetic number, because the mean of its divisors is an integer number (4402922004).

Almost surely, 2^43381730505 is an apocalyptic number.

It is an amenable number.

43381730505 is a deficient number, since it is larger than the sum of its proper divisors (27065021559).

43381730505 is a wasteful number, since it uses less digits than its factorization.

43381730505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43165976.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 43381730505 in words is "forty-three billion, three hundred eighty-one million, seven hundred thirty thousand, five hundred five".