43261766643 has 4 divisors (see below), whose sum is σ = 57682355528. Its totient is φ = 28841177760.

The previous prime is 43261766641. The next prime is 43261766659. The reversal of 43261766643 is 34666716234.

43261766643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 43261766643 - 2¹ = 43261766641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43261766592 and 43261766601.

It is not an unprimeable number, because it can be changed into a prime (43261766641) 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, 7210294438 + ... + 7210294443.

It is an arithmetic number, because the mean of its divisors is an integer number (14420588882).

Almost surely, 2^43261766643 is an apocalyptic number.

43261766643 is a deficient number, since it is larger than the sum of its proper divisors (14420588885).

43261766643 is a wasteful number, since it uses less digits than its factorization.

43261766643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14420588884.

The product of its digits is 2612736, while the sum is 48.

The spelling of 43261766643 in words is "forty-three billion, two hundred sixty-one million, seven hundred sixty-six thousand, six hundred forty-three".