13805723523 has 8 divisors (see below), whose sum is σ = 18412184848. Its totient is φ = 9201538944.

The previous prime is 13805723509. The next prime is 13805723537. The reversal of 13805723523 is 32532750831.

It is an interprime number because it is at equal distance from previous prime (13805723509) and next prime (13805723537).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13805723523 - 2¹³ = 13805715331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13805793523) 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 in 7 ways as a sum of consecutive naturals, for example, 554986 + ... + 579327.

It is an arithmetic number, because the mean of its divisors is an integer number (2301523106).

Almost surely, 2^13805723523 is an apocalyptic number.

13805723523 is a deficient number, since it is larger than the sum of its proper divisors (4606461325).

13805723523 is a wasteful number, since it uses less digits than its factorization.

13805723523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138373.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 13805723523 in words is "thirteen billion, eight hundred five million, seven hundred twenty-three thousand, five hundred twenty-three".