113503516421 has 2 divisors, whose sum is σ = 113503516422. Its totient is φ = 113503516420.

The previous prime is 113503516417. The next prime is 113503516433. The reversal of 113503516421 is 124615305311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96338848225 + 17164668196 = 310385^2 + 131014^2 .

It is a cyclic number.

It is not a de Polignac number, because 113503516421 - 2² = 113503516417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113503516481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56751758210 + 56751758211.

It is an arithmetic number, because the mean of its divisors is an integer number (56751758211).

Almost surely, 2^113503516421 is an apocalyptic number.

It is an amenable number.

113503516421 is a deficient number, since it is larger than the sum of its proper divisors (1).

113503516421 is an equidigital number, since it uses as much as digits as its factorization.

113503516421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 113503516421 in words is "one hundred thirteen billion, five hundred three million, five hundred sixteen thousand, four hundred twenty-one".