43153809157 has 2 divisors, whose sum is σ = 43153809158. Its totient is φ = 43153809156.

The previous prime is 43153809121. The next prime is 43153809161. The reversal of 43153809157 is 75190835134.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29293691716 + 13860117441 = 171154^2 + 117729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43153809157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43153809187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21576904578 + 21576904579.

It is an arithmetic number, because the mean of its divisors is an integer number (21576904579).

Almost surely, 2^43153809157 is an apocalyptic number.

It is an amenable number.

43153809157 is a deficient number, since it is larger than the sum of its proper divisors (1).

43153809157 is an equidigital number, since it uses as much as digits as its factorization.

43153809157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 43153809157 in words is "forty-three billion, one hundred fifty-three million, eight hundred nine thousand, one hundred fifty-seven".