43775100643 has 2 divisors, whose sum is σ = 43775100644. Its totient is φ = 43775100642.

The previous prime is 43775100553. The next prime is 43775100709. The reversal of 43775100643 is 34600157734.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43775100643 - 2¹³ = 43775092451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43775100596 and 43775100605.

It is not a weakly prime, because it can be changed into another prime (43775100043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21887550321 + 21887550322.

It is an arithmetic number, because the mean of its divisors is an integer number (21887550322).

Almost surely, 2^43775100643 is an apocalyptic number.

43775100643 is a deficient number, since it is larger than the sum of its proper divisors (1).

43775100643 is an equidigital number, since it uses as much as digits as its factorization.

43775100643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 40.

The spelling of 43775100643 in words is "forty-three billion, seven hundred seventy-five million, one hundred thousand, six hundred forty-three".