43139647471 has 4 divisors (see below), whose sum is σ = 43233226344. Its totient is φ = 43046068600.

The previous prime is 43139647451. The next prime is 43139647483. The reversal of 43139647471 is 17474693134.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43139647471 is a prime.

It is a super-3 number, since 3×43139647471³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 (43139647451) 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, 46788745 + ... + 46789666.

It is an arithmetic number, because the mean of its divisors is an integer number (10808306586).

Almost surely, 2^43139647471 is an apocalyptic number.

43139647471 is a deficient number, since it is larger than the sum of its proper divisors (93578873).

43139647471 is an equidigital number, since it uses as much as digits as its factorization.

43139647471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93578872.

The product of its digits is 1524096, while the sum is 49.

The spelling of 43139647471 in words is "forty-three billion, one hundred thirty-nine million, six hundred forty-seven thousand, four hundred seventy-one".