43690683529 has 2 divisors, whose sum is σ = 43690683530. Its totient is φ = 43690683528.

The previous prime is 43690683503. The next prime is 43690683539. The reversal of 43690683529 is 92538609634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41718879504 + 1971804025 = 204252^2 + 44405^2 .

It is a cyclic number.

It is not a de Polignac number, because 43690683529 - 2²³ = 43682294921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43690683529.

It is not a weakly prime, because it can be changed into another prime (43690683539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21845341764 + 21845341765.

It is an arithmetic number, because the mean of its divisors is an integer number (21845341765).

Almost surely, 2^43690683529 is an apocalyptic number.

It is an amenable number.

43690683529 is a deficient number, since it is larger than the sum of its proper divisors (1).

43690683529 is an equidigital number, since it uses as much as digits as its factorization.

43690683529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 43690683529 in words is "forty-three billion, six hundred ninety million, six hundred eighty-three thousand, five hundred twenty-nine".