16561084762 has 4 divisors (see below), whose sum is σ = 24841627146. Its totient is φ = 8280542380.

The previous prime is 16561084753. The next prime is 16561084763. The reversal of 16561084762 is 26748016561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16259055121 + 302029641 = 127511^2 + 17379^2 .

It is not an unprimeable number, because it can be changed into a prime (16561084763) by changing a digit.

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 as a sum of consecutive naturals, namely, 4140271189 + ... + 4140271192.

Almost surely, 2^16561084762 is an apocalyptic number.

16561084762 is a deficient number, since it is larger than the sum of its proper divisors (8280542384).

16561084762 is an equidigital number, since it uses as much as digits as its factorization.

16561084762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280542383.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 16561084762 in words is "sixteen billion, five hundred sixty-one million, eighty-four thousand, seven hundred sixty-two".