13505835723 has 16 divisors (see below), whose sum is σ = 18309533472. Its totient is φ = 8853120000.

The previous prime is 13505835653. The next prime is 13505835781. The reversal of 13505835723 is 32753850531.

It is not a de Polignac number, because 13505835723 - 2⁸ = 13505835467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13505835223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570523 + ... + 593723.

It is an arithmetic number, because the mean of its divisors is an integer number (1144345842).

Almost surely, 2^13505835723 is an apocalyptic number.

13505835723 is a deficient number, since it is larger than the sum of its proper divisors (4803697749).

13505835723 is a wasteful number, since it uses less digits than its factorization.

13505835723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26446.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 13505835723 in words is "thirteen billion, five hundred five million, eight hundred thirty-five thousand, seven hundred twenty-three".