43657370055157 has 2 divisors, whose sum is σ = 43657370055158. Its totient is φ = 43657370055156.

The previous prime is 43657370055121. The next prime is 43657370055161. The reversal of 43657370055157 is 75155007375634.

43657370055157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43502453818321 + 154916236836 = 6595639^2 + 393594^2 .

It is a cyclic number.

It is not a de Polignac number, because 43657370055157 - 2⁷ = 43657370055029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43657374055157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21828685027578 + 21828685027579.

It is an arithmetic number, because the mean of its divisors is an integer number (21828685027579).

Almost surely, 2^{43657370055157} is an apocalyptic number.

It is an amenable number.

43657370055157 is a deficient number, since it is larger than the sum of its proper divisors (1).

43657370055157 is an equidigital number, since it uses as much as digits as its factorization.

43657370055157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46305000, while the sum is 58.

The spelling of 43657370055157 in words is "forty-three trillion, six hundred fifty-seven billion, three hundred seventy million, fifty-five thousand, one hundred fifty-seven".