43485906571 has 2 divisors, whose sum is σ = 43485906572. Its totient is φ = 43485906570.

The previous prime is 43485906557. The next prime is 43485906577. The reversal of 43485906571 is 17560958434.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43485906571 is a prime.

It is not a weakly prime, because it can be changed into another prime (43485906577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21742953285 + 21742953286.

It is an arithmetic number, because the mean of its divisors is an integer number (21742953286).

Almost surely, 2^43485906571 is an apocalyptic number.

43485906571 is a deficient number, since it is larger than the sum of its proper divisors (1).

43485906571 is an equidigital number, since it uses as much as digits as its factorization.

43485906571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 43485906571 in words is "forty-three billion, four hundred eighty-five million, nine hundred six thousand, five hundred seventy-one".