43149592901 has 2 divisors, whose sum is σ = 43149592902. Its totient is φ = 43149592900.

The previous prime is 43149592891. The next prime is 43149592907. The reversal of 43149592901 is 10929594134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35062188001 + 8087404900 = 187249^2 + 89930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43149592901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43149592907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21574796450 + 21574796451.

It is an arithmetic number, because the mean of its divisors is an integer number (21574796451).

Almost surely, 2^43149592901 is an apocalyptic number.

It is an amenable number.

43149592901 is a deficient number, since it is larger than the sum of its proper divisors (1).

43149592901 is an equidigital number, since it uses as much as digits as its factorization.

43149592901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 43149592901 in words is "forty-three billion, one hundred forty-nine million, five hundred ninety-two thousand, nine hundred one".