16504651634 has 16 divisors (see below), whose sum is σ = 24816395736. Its totient is φ = 8232537600.

The previous prime is 16504651633. The next prime is 16504651729. The reversal of 16504651634 is 43615640561.

It can be written as a sum of positive squares in 4 ways, for example, as 14375290609 + 2129361025 = 119897^2 + 46145^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16504651591 and 16504651600.

It is not an unprimeable number, because it can be changed into a prime (16504651633) 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, 2872004 + ... + 2877744.

Almost surely, 2^16504651634 is an apocalyptic number.

16504651634 is a deficient number, since it is larger than the sum of its proper divisors (8311744102).

16504651634 is a wasteful number, since it uses less digits than its factorization.

16504651634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8941.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 16504651634 in words is "sixteen billion, five hundred four million, six hundred fifty-one thousand, six hundred thirty-four".