43212328057 has 2 divisors, whose sum is σ = 43212328058. Its totient is φ = 43212328056.

The previous prime is 43212328037. The next prime is 43212328099. The reversal of 43212328057 is 75082321234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29342319616 + 13870008441 = 171296^2 + 117771^2 .

It is a cyclic number.

It is not a de Polignac number, because 43212328057 - 2²⁷ = 43078110329 is a prime.

It is a super-2 number, since 2×43212328057² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43212328037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606164028 + 21606164029.

It is an arithmetic number, because the mean of its divisors is an integer number (21606164029).

Almost surely, 2^43212328057 is an apocalyptic number.

It is an amenable number.

43212328057 is a deficient number, since it is larger than the sum of its proper divisors (1).

43212328057 is an equidigital number, since it uses as much as digits as its factorization.

43212328057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 43212328057 in words is "forty-three billion, two hundred twelve million, three hundred twenty-eight thousand, fifty-seven".