16523613605 has 16 divisors (see below), whose sum is σ = 19987691328. Its totient is φ = 13112736000.

The previous prime is 16523613593. The next prime is 16523613653. The reversal of 16523613605 is 50631632561.

It is not a de Polignac number, because 16523613605 - 2⁸ = 16523613349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2984690 + ... + 2990220.

It is an arithmetic number, because the mean of its divisors is an integer number (1249230708).

Almost surely, 2^16523613605 is an apocalyptic number.

It is an amenable number.

16523613605 is a deficient number, since it is larger than the sum of its proper divisors (3464077723).

16523613605 is a wasteful number, since it uses less digits than its factorization.

16523613605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10228.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 16523613605 in words is "sixteen billion, five hundred twenty-three million, six hundred thirteen thousand, six hundred five".