43256429497 has 2 divisors, whose sum is σ = 43256429498. Its totient is φ = 43256429496.

The previous prime is 43256429471. The next prime is 43256429519. The reversal of 43256429497 is 79492465234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37410909561 + 5845519936 = 193419^2 + 76456^2 .

It is a cyclic number.

It is not a de Polignac number, because 43256429497 - 2¹¹ = 43256427449 is a prime.

It is a super-2 number, since 2×43256429497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43256429417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21628214748 + 21628214749.

It is an arithmetic number, because the mean of its divisors is an integer number (21628214749).

Almost surely, 2^43256429497 is an apocalyptic number.

It is an amenable number.

43256429497 is a deficient number, since it is larger than the sum of its proper divisors (1).

43256429497 is an equidigital number, since it uses as much as digits as its factorization.

43256429497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 55.

The spelling of 43256429497 in words is "forty-three billion, two hundred fifty-six million, four hundred twenty-nine thousand, four hundred ninety-seven".