16540006562 has 8 divisors (see below), whose sum is σ = 24811652892. Its totient is φ = 8269455600.

The previous prime is 16540006543. The next prime is 16540006573. The reversal of 16540006562 is 26560004561.

It can be written as a sum of positive squares in 2 ways, for example, as 16417040641 + 122965921 = 128129^2 + 11089^2 .

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, 234989 + ... + 297152.

Almost surely, 2^16540006562 is an apocalyptic number.

16540006562 is a deficient number, since it is larger than the sum of its proper divisors (8271646330).

16540006562 is a wasteful number, since it uses less digits than its factorization.

16540006562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547684.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 16540006562 in words is "sixteen billion, five hundred forty million, six thousand, five hundred sixty-two".