16622849561 has 8 divisors (see below), whose sum is σ = 18101107200. Its totient is φ = 15204929040.

The previous prime is 16622849557. The next prime is 16622849587. The reversal of 16622849561 is 16594822661.

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

It is a cyclic number.

It is not a de Polignac number, because 16622849561 - 2² = 16622849557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16622849521) 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 in 7 ways as a sum of consecutive naturals, for example, 15083705 + ... + 15084806.

It is an arithmetic number, because the mean of its divisors is an integer number (2262638400).

Almost surely, 2^16622849561 is an apocalyptic number.

It is an amenable number.

16622849561 is a deficient number, since it is larger than the sum of its proper divisors (1478257639).

16622849561 is a wasteful number, since it uses less digits than its factorization.

16622849561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30168559.

The product of its digits is 1244160, while the sum is 50.

The spelling of 16622849561 in words is "sixteen billion, six hundred twenty-two million, eight hundred forty-nine thousand, five hundred sixty-one".