43235654536561 has 16 divisors (see below), whose sum is σ = 45221835897216. Its totient is φ = 41258430881536.

The previous prime is 43235654536427. The next prime is 43235654536583. The reversal of 43235654536561 is 16563545653234.

43235654536561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 43235654536561 - 2¹⁵ = 43235654503793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43235654536496 and 43235654536505.

It is not an unprimeable number, because it can be changed into a prime (43235654536661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19301406 + ... + 21424648.

It is an arithmetic number, because the mean of its divisors is an integer number (2826364743576).

Almost surely, 2^{43235654536561} is an apocalyptic number.

It is an amenable number.

43235654536561 is a deficient number, since it is larger than the sum of its proper divisors (1986181360655).

43235654536561 is a wasteful number, since it uses less digits than its factorization.

43235654536561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125352.

The product of its digits is 116640000, while the sum is 58.

The spelling of 43235654536561 in words is "forty-three trillion, two hundred thirty-five billion, six hundred fifty-four million, five hundred thirty-six thousand, five hundred sixty-one".