113551520163 has 4 divisors (see below), whose sum is σ = 151402026888. Its totient is φ = 75701013440.

The previous prime is 113551520113. The next prime is 113551520167. The reversal of 113551520163 is 361025155311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113551520163 - 2³³ = 104961585571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113551520167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18925253358 + ... + 18925253363.

It is an arithmetic number, because the mean of its divisors is an integer number (37850506722).

Almost surely, 2^113551520163 is an apocalyptic number.

113551520163 is a deficient number, since it is larger than the sum of its proper divisors (37850506725).

113551520163 is an equidigital number, since it uses as much as digits as its factorization.

113551520163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37850506724.

The product of its (nonzero) digits is 13500, while the sum is 33.

Adding to 113551520163 its reverse (361025155311), we get a palindrome (474576675474).

The spelling of 113551520163 in words is "one hundred thirteen billion, five hundred fifty-one million, five hundred twenty thousand, one hundred sixty-three".