16534604404 has 24 divisors (see below), whose sum is σ = 29651990760. Its totient is φ = 8064411264.

The previous prime is 16534604393. The next prime is 16534604407. The reversal of 16534604404 is 40440643561.

It can be written as a sum of positive squares in 4 ways, for example, as 5141176804 + 11393427600 = 71702^2 + 106740^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16534604407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188739 + ... + 262090.

It is an arithmetic number, because the mean of its divisors is an integer number (1235499615).

Almost surely, 2^16534604404 is an apocalyptic number.

It is an amenable number.

16534604404 is a deficient number, since it is larger than the sum of its proper divisors (13117386356).

16534604404 is a wasteful number, since it uses less digits than its factorization.

16534604404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451059 (or 451057 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 16534604404 in words is "sixteen billion, five hundred thirty-four million, six hundred four thousand, four hundred four".