16604810465 has 8 divisors (see below), whose sum is σ = 19927038120. Its totient is φ = 13283004672.

The previous prime is 16604810449. The next prime is 16604810471. The reversal of 16604810465 is 56401840661.

It can be written as a sum of positive squares in 4 ways, for example, as 1377003664 + 15227806801 = 37108^2 + 123401^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16604810465 - 2⁴ = 16604810449 is a prime.

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, 11210 + ... + 182579.

It is an arithmetic number, because the mean of its divisors is an integer number (2490879765).

Almost surely, 2^16604810465 is an apocalyptic number.

It is an amenable number.

16604810465 is a deficient number, since it is larger than the sum of its proper divisors (3322227655).

16604810465 is a wasteful number, since it uses less digits than its factorization.

16604810465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210931.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 16604810465 in words is "sixteen billion, six hundred four million, eight hundred ten thousand, four hundred sixty-five".