43206502973 has 2 divisors, whose sum is σ = 43206502974. Its totient is φ = 43206502972.

The previous prime is 43206502967. The next prime is 43206502979. The reversal of 43206502973 is 37920560234.

It is a balanced prime because it is at equal distance from previous prime (43206502967) and next prime (43206502979).

It can be written as a sum of positive squares in only one way, i.e., 30210958969 + 12995544004 = 173813^2 + 113998^2 .

It is a cyclic number.

It is not a de Polignac number, because 43206502973 - 2⁶ = 43206502909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 43206502973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43206502979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21603251486 + 21603251487.

It is an arithmetic number, because the mean of its divisors is an integer number (21603251487).

Almost surely, 2^43206502973 is an apocalyptic number.

It is an amenable number.

43206502973 is a deficient number, since it is larger than the sum of its proper divisors (1).

43206502973 is an equidigital number, since it uses as much as digits as its factorization.

43206502973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 43206502973 in words is "forty-three billion, two hundred six million, five hundred two thousand, nine hundred seventy-three".