43618868625373 has 2 divisors, whose sum is σ = 43618868625374. Its totient is φ = 43618868625372.

The previous prime is 43618868625203. The next prime is 43618868625391. The reversal of 43618868625373 is 37352686881634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30726589526649 + 12892279098724 = 5543157^2 + 3590582^2 .

It is a cyclic number.

It is not a de Polignac number, because 43618868625373 - 2¹⁷ = 43618868494301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43618868626373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21809434312686 + 21809434312687.

It is an arithmetic number, because the mean of its divisors is an integer number (21809434312687).

Almost surely, 2^{43618868625373} is an apocalyptic number.

It is an amenable number.

43618868625373 is a deficient number, since it is larger than the sum of its proper divisors (1).

43618868625373 is an equidigital number, since it uses as much as digits as its factorization.

43618868625373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 836075520, while the sum is 70.

The spelling of 43618868625373 in words is "forty-three trillion, six hundred eighteen billion, eight hundred sixty-eight million, six hundred twenty-five thousand, three hundred seventy-three".