43434620063261 has 4 divisors (see below), whose sum is σ = 49639565786592. Its totient is φ = 37229674339932.

The previous prime is 43434620063203. The next prime is 43434620063279. The reversal of 43434620063261 is 16236002643434.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43434620063261 - 2²² = 43434615868957 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 (43434620063291) 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, 3102472861655 + ... + 3102472861668.

It is an arithmetic number, because the mean of its divisors is an integer number (12409891446648).

Almost surely, 2^{43434620063261} is an apocalyptic number.

It is an amenable number.

43434620063261 is a deficient number, since it is larger than the sum of its proper divisors (6204945723331).

43434620063261 is an equidigital number, since it uses as much as digits as its factorization.

43434620063261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204945723330.

The product of its (nonzero) digits is 1492992, while the sum is 44.

The spelling of 43434620063261 in words is "forty-three trillion, four hundred thirty-four billion, six hundred twenty million, sixty-three thousand, two hundred sixty-one".