43154343049 has 2 divisors, whose sum is σ = 43154343050. Its totient is φ = 43154343048.

The previous prime is 43154342999. The next prime is 43154343059. The reversal of 43154343049 is 94034345134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29673507600 + 13480835449 = 172260^2 + 116107^2 .

It is a cyclic number.

It is not a de Polignac number, because 43154343049 - 2⁷ = 43154342921 is a prime.

It is not a weakly prime, because it can be changed into another prime (43154343059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21577171524 + 21577171525.

It is an arithmetic number, because the mean of its divisors is an integer number (21577171525).

Almost surely, 2^43154343049 is an apocalyptic number.

It is an amenable number.

43154343049 is a deficient number, since it is larger than the sum of its proper divisors (1).

43154343049 is an equidigital number, since it uses as much as digits as its factorization.

43154343049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 43154343049 in words is "forty-three billion, one hundred fifty-four million, three hundred forty-three thousand, forty-nine".