43909394812473 has 64 divisors (see below), whose sum is σ = 59837770137600. Its totient is φ = 28636131363840.

The previous prime is 43909394812427. The next prime is 43909394812523. The reversal of 43909394812473 is 37421849390934.

It is not a de Polignac number, because 43909394812473 - 2²⁶ = 43909327703609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43909394812973) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7783970733 + ... + 7783976373.

It is an arithmetic number, because the mean of its divisors is an integer number (934965158400).

Almost surely, 2^{43909394812473} is an apocalyptic number.

It is an amenable number.

43909394812473 is a deficient number, since it is larger than the sum of its proper divisors (15928375325127).

43909394812473 is a wasteful number, since it uses less digits than its factorization.

43909394812473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6742.

The product of its (nonzero) digits is 141087744, while the sum is 66.

The spelling of 43909394812473 in words is "forty-three trillion, nine hundred nine billion, three hundred ninety-four million, eight hundred twelve thousand, four hundred seventy-three".