43504782871 has 4 divisors (see below), whose sum is σ = 47459763144. Its totient is φ = 39549802600.

The previous prime is 43504782857. The next prime is 43504782901. The reversal of 43504782871 is 17828740534.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 43504782871 - 2¹⁵ = 43504750103 is a prime.

It is a super-2 number, since 2×43504782871² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43504782851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1977490120 + ... + 1977490141.

It is an arithmetic number, because the mean of its divisors is an integer number (11864940786).

Almost surely, 2^43504782871 is an apocalyptic number.

43504782871 is a deficient number, since it is larger than the sum of its proper divisors (3954980273).

43504782871 is a wasteful number, since it uses less digits than its factorization.

43504782871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954980272.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 43504782871 in words is "forty-three billion, five hundred four million, seven hundred eighty-two thousand, eight hundred seventy-one".