43720269563 has 2 divisors, whose sum is σ = 43720269564. Its totient is φ = 43720269562.

The previous prime is 43720269521. The next prime is 43720269583. The reversal of 43720269563 is 36596202734.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43720269563 - 2¹⁰ = 43720268539 is a prime.

It is a super-2 number, since 2×43720269563² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43720269583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21860134781 + 21860134782.

It is an arithmetic number, because the mean of its divisors is an integer number (21860134782).

Almost surely, 2^43720269563 is an apocalyptic number.

43720269563 is a deficient number, since it is larger than the sum of its proper divisors (1).

43720269563 is an equidigital number, since it uses as much as digits as its factorization.

43720269563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 47.

The spelling of 43720269563 in words is "forty-three billion, seven hundred twenty million, two hundred sixty-nine thousand, five hundred sixty-three".