109487353421 has 2 divisors, whose sum is σ = 109487353422. Its totient is φ = 109487353420.

The previous prime is 109487353397. The next prime is 109487353427. The reversal of 109487353421 is 124353784901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59188077796 + 50299275625 = 243286^2 + 224275^2 .

It is an emirp because it is prime and its reverse (124353784901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109487353421 - 2¹⁸ = 109487091277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109487353427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54743676710 + 54743676711.

It is an arithmetic number, because the mean of its divisors is an integer number (54743676711).

Almost surely, 2^109487353421 is an apocalyptic number.

It is an amenable number.

109487353421 is a deficient number, since it is larger than the sum of its proper divisors (1).

109487353421 is an equidigital number, since it uses as much as digits as its factorization.

109487353421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 109487353421 in words is "one hundred nine billion, four hundred eighty-seven million, three hundred fifty-three thousand, four hundred twenty-one".