43143402257 has 2 divisors, whose sum is σ = 43143402258. Its totient is φ = 43143402256.

The previous prime is 43143402199. The next prime is 43143402317. The reversal of 43143402257 is 75220434134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32703467281 + 10439934976 = 180841^2 + 102176^2 .

It is a cyclic number.

It is not a de Polignac number, because 43143402257 - 2¹⁸ = 43143140113 is a prime.

It is a super-2 number, since 2×43143402257² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43143432257) 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, 21571701128 + 21571701129.

It is an arithmetic number, because the mean of its divisors is an integer number (21571701129).

Almost surely, 2^43143402257 is an apocalyptic number.

It is an amenable number.

43143402257 is a deficient number, since it is larger than the sum of its proper divisors (1).

43143402257 is an equidigital number, since it uses as much as digits as its factorization.

43143402257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 43143402257 in words is "forty-three billion, one hundred forty-three million, four hundred two thousand, two hundred fifty-seven".