16504642535 has 8 divisors (see below), whose sum is σ = 19809737136. Its totient is φ = 13200936640.

The previous prime is 16504642523. The next prime is 16504642573. The reversal of 16504642535 is 53524640561.

It is a happy number.

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

It is not a de Polignac number, because 16504642535 - 2⁸ = 16504642279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16504642492 and 16504642501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320846 + ... + 368715.

It is an arithmetic number, because the mean of its divisors is an integer number (2476217142).

Almost surely, 2^16504642535 is an apocalyptic number.

16504642535 is a deficient number, since it is larger than the sum of its proper divisors (3305094601).

16504642535 is an equidigital number, since it uses as much as digits as its factorization.

16504642535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694353.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 16504642535 in words is "sixteen billion, five hundred four million, six hundred forty-two thousand, five hundred thirty-five".