43454496557 has 2 divisors, whose sum is σ = 43454496558. Its totient is φ = 43454496556.

The previous prime is 43454496521. The next prime is 43454496559. The reversal of 43454496557 is 75569445434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39190537156 + 4263959401 = 197966^2 + 65299^2 .

It is a cyclic number.

It is not a de Polignac number, because 43454496557 - 2⁶ = 43454496493 is a prime.

Together with 43454496559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43454496559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21727248278 + 21727248279.

It is an arithmetic number, because the mean of its divisors is an integer number (21727248279).

Almost surely, 2^43454496557 is an apocalyptic number.

It is an amenable number.

43454496557 is a deficient number, since it is larger than the sum of its proper divisors (1).

43454496557 is an equidigital number, since it uses as much as digits as its factorization.

43454496557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288000, while the sum is 56.

The spelling of 43454496557 in words is "forty-three billion, four hundred fifty-four million, four hundred ninety-six thousand, five hundred fifty-seven".