43198289957 has 2 divisors, whose sum is σ = 43198289958. Its totient is φ = 43198289956.

The previous prime is 43198289923. The next prime is 43198290007. The reversal of 43198289957 is 75998289134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25318856161 + 17879433796 = 159119^2 + 133714^2 .

It is a cyclic number.

It is not a de Polignac number, because 43198289957 - 2¹² = 43198285861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43198289893 and 43198289902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43198219957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21599144978 + 21599144979.

It is an arithmetic number, because the mean of its divisors is an integer number (21599144979).

Almost surely, 2^43198289957 is an apocalyptic number.

It is an amenable number.

43198289957 is a deficient number, since it is larger than the sum of its proper divisors (1).

43198289957 is an equidigital number, since it uses as much as digits as its factorization.

43198289957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39191040, while the sum is 65.

The spelling of 43198289957 in words is "forty-three billion, one hundred ninety-eight million, two hundred eighty-nine thousand, nine hundred fifty-seven".