43145257093 has 2 divisors, whose sum is σ = 43145257094. Its totient is φ = 43145257092.

The previous prime is 43145257091. The next prime is 43145257109. The reversal of 43145257093 is 39075254134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43071606369 + 73650724 = 207537^2 + 8582^2 .

It is a cyclic number.

It is not a de Polignac number, because 43145257093 - 2¹ = 43145257091 is a prime.

It is a super-3 number, since 3×43145257093³ (a number of 33 digits) contains 333 as substring.

Together with 43145257091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43145257091) 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, 21572628546 + 21572628547.

It is an arithmetic number, because the mean of its divisors is an integer number (21572628547).

Almost surely, 2^43145257093 is an apocalyptic number.

It is an amenable number.

43145257093 is a deficient number, since it is larger than the sum of its proper divisors (1).

43145257093 is an equidigital number, since it uses as much as digits as its factorization.

43145257093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 43145257093 in words is "forty-three billion, one hundred forty-five million, two hundred fifty-seven thousand, ninety-three".