43803705397 has 2 divisors, whose sum is σ = 43803705398. Its totient is φ = 43803705396.

The previous prime is 43803705347. The next prime is 43803705403. The reversal of 43803705397 is 79350730834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32760638001 + 11043067396 = 180999^2 + 105086^2 .

It is a cyclic number.

It is not a de Polignac number, because 43803705397 - 2²⁷ = 43669487669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43803705397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43803705307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21901852698 + 21901852699.

It is an arithmetic number, because the mean of its divisors is an integer number (21901852699).

Almost surely, 2^43803705397 is an apocalyptic number.

It is an amenable number.

43803705397 is a deficient number, since it is larger than the sum of its proper divisors (1).

43803705397 is an equidigital number, since it uses as much as digits as its factorization.

43803705397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 49.

The spelling of 43803705397 in words is "forty-three billion, eight hundred three million, seven hundred five thousand, three hundred ninety-seven".