43554775073 has 2 divisors, whose sum is σ = 43554775074. Its totient is φ = 43554775072.

The previous prime is 43554775057. The next prime is 43554775181. The reversal of 43554775073 is 37057745534.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35175752704 + 8379022369 = 187552^2 + 91537^2 .

It is a cyclic number.

It is not a de Polignac number, because 43554775073 - 2⁴ = 43554775057 is a prime.

It is a super-3 number, since 3×43554775073³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (43554772073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21777387536 + 21777387537.

It is an arithmetic number, because the mean of its divisors is an integer number (21777387537).

Almost surely, 2^43554775073 is an apocalyptic number.

It is an amenable number.

43554775073 is a deficient number, since it is larger than the sum of its proper divisors (1).

43554775073 is an equidigital number, since it uses as much as digits as its factorization.

43554775073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6174000, while the sum is 50.

The spelling of 43554775073 in words is "forty-three billion, five hundred fifty-four million, seven hundred seventy-five thousand, seventy-three".