43257024649 has 2 divisors, whose sum is σ = 43257024650. Its totient is φ = 43257024648.

The previous prime is 43257024599. The next prime is 43257024659. The reversal of 43257024649 is 94642075234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22302435600 + 20954589049 = 149340^2 + 144757^2 .

It is a cyclic number.

It is not a de Polignac number, because 43257024649 - 2¹³ = 43257016457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43257024599 and 43257024608.

It is not a weakly prime, because it can be changed into another prime (43257024659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21628512324 + 21628512325.

It is an arithmetic number, because the mean of its divisors is an integer number (21628512325).

Almost surely, 2^43257024649 is an apocalyptic number.

It is an amenable number.

43257024649 is a deficient number, since it is larger than the sum of its proper divisors (1).

43257024649 is an equidigital number, since it uses as much as digits as its factorization.

43257024649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 43257024649 in words is "forty-three billion, two hundred fifty-seven million, twenty-four thousand, six hundred forty-nine".