16501605004 has 48 divisors (see below), whose sum is σ = 29748096000. Its totient is φ = 8006334336.

The previous prime is 16501604981. The next prime is 16501605017. The reversal of 16501605004 is 40050610561.

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, 15730272 + ... + 15731320.

It is an arithmetic number, because the mean of its divisors is an integer number (619752000).

Almost surely, 2^16501605004 is an apocalyptic number.

It is an amenable number.

16501605004 is a deficient number, since it is larger than the sum of its proper divisors (13246490996).

16501605004 is a wasteful number, since it uses less digits than its factorization.

16501605004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 16501605004 in words is "sixteen billion, five hundred one million, six hundred five thousand, four".