43321378245261 has 8 divisors (see below), whose sum is σ = 57761868372480. Its totient is φ = 28880903474112.

The previous prime is 43321378245259. The next prime is 43321378245281. The reversal of 43321378245261 is 16254287312334.

43321378245261 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 not a de Polignac number, because 43321378245261 - 2¹ = 43321378245259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43321378245251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7688245 + ... + 12072773.

It is an arithmetic number, because the mean of its divisors is an integer number (7220233546560).

Almost surely, 2^{43321378245261} is an apocalyptic number.

It is an amenable number.

43321378245261 is a deficient number, since it is larger than the sum of its proper divisors (14440490127219).

43321378245261 is a wasteful number, since it uses less digits than its factorization.

43321378245261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7678035.

The product of its digits is 5806080, while the sum is 51.

The spelling of 43321378245261 in words is "forty-three trillion, three hundred twenty-one billion, three hundred seventy-eight million, two hundred forty-five thousand, two hundred sixty-one".