43495961309 has 8 divisors (see below), whose sum is σ = 43838028960. Its totient is φ = 43154046000.

The previous prime is 43495961293. The next prime is 43495961317. The reversal of 43495961309 is 90316959434.

43495961309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43495961309 - 2⁴ = 43495961293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43495961329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573587 + ... + 644975.

It is an arithmetic number, because the mean of its divisors is an integer number (5479753620).

Almost surely, 2^43495961309 is an apocalyptic number.

It is an amenable number.

43495961309 is a deficient number, since it is larger than the sum of its proper divisors (342067651).

43495961309 is a wasteful number, since it uses less digits than its factorization.

43495961309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76171.

The product of its (nonzero) digits is 3149280, while the sum is 53.

The spelling of 43495961309 in words is "forty-three billion, four hundred ninety-five million, nine hundred sixty-one thousand, three hundred nine".