43471672421 has 8 divisors (see below), whose sum is σ = 45829106400. Its totient is φ = 41121183600.

The previous prime is 43471672393. The next prime is 43471672427. The reversal of 43471672421 is 12427617434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43471672421 - 2⁶ = 43471672357 is a prime.

It is a super-3 number, since 3×43471672421³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43471672427) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1723430 + ... + 1748471.

It is an arithmetic number, because the mean of its divisors is an integer number (5728638300).

Almost surely, 2^43471672421 is an apocalyptic number.

It is an amenable number.

43471672421 is a deficient number, since it is larger than the sum of its proper divisors (2357433979).

43471672421 is a wasteful number, since it uses less digits than its factorization.

43471672421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472579.

The product of its digits is 225792, while the sum is 41.

The spelling of 43471672421 in words is "forty-three billion, four hundred seventy-one million, six hundred seventy-two thousand, four hundred twenty-one".