103644440523 has 24 divisors (see below), whose sum is σ = 162384600560. Its totient is φ = 63322326720.

The previous prime is 103644440491. The next prime is 103644440551. The reversal of 103644440523 is 325044446301.

103644440523 is a `hidden beast` number, since 1 + 0 + 3 + 644 + 4 + 4 + 0 + 5 + 2 + 3 = 666.

It is not a de Polignac number, because 103644440523 - 2⁵ = 103644440491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103644440573) 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 23 ways as a sum of consecutive naturals, for example, 3170248 + ... + 3202773.

Almost surely, 2^103644440523 is an apocalyptic number.

103644440523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

103644440523 is a deficient number, since it is larger than the sum of its proper divisors (58740160037).

103644440523 is a wasteful number, since it uses less digits than its factorization.

103644440523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6373179 (or 6373176 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 103644440523 its reverse (325044446301), we get a palindrome (428688886824).

The spelling of 103644440523 in words is "one hundred three billion, six hundred forty-four million, four hundred forty thousand, five hundred twenty-three".