16535634418 has 8 divisors (see below), whose sum is σ = 24812683740. Its totient is φ = 8264739840.

The previous prime is 16535634403. The next prime is 16535634449. The reversal of 16535634418 is 81443653561.

It can be written as a sum of positive squares in 2 ways, for example, as 16370434809 + 165199609 = 127947^2 + 12853^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1531963 + ... + 1542718.

Almost surely, 2^16535634418 is an apocalyptic number.

16535634418 is a deficient number, since it is larger than the sum of its proper divisors (8277049322).

16535634418 is a wasteful number, since it uses less digits than its factorization.

16535634418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077372.

The product of its digits is 1036800, while the sum is 46.

The spelling of 16535634418 in words is "sixteen billion, five hundred thirty-five million, six hundred thirty-four thousand, four hundred eighteen".