43090732973 has 2 divisors, whose sum is σ = 43090732974. Its totient is φ = 43090732972.

The previous prime is 43090732969. The next prime is 43090733009. The reversal of 43090732973 is 37923709034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35245556644 + 7845176329 = 187738^2 + 88573^2 .

It is a cyclic number.

It is not a de Polignac number, because 43090732973 - 2² = 43090732969 is a prime.

It is a super-2 number, since 2×43090732973² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43090732943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21545366486 + 21545366487.

It is an arithmetic number, because the mean of its divisors is an integer number (21545366487).

Almost surely, 2^43090732973 is an apocalyptic number.

It is an amenable number.

43090732973 is a deficient number, since it is larger than the sum of its proper divisors (1).

43090732973 is an equidigital number, since it uses as much as digits as its factorization.

43090732973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 47.

The spelling of 43090732973 in words is "forty-three billion, ninety million, seven hundred thirty-two thousand, nine hundred seventy-three".