2616216551 has 4 divisors (see below), whose sum is σ = 2817463992. Its totient is φ = 2414969112.

The previous prime is 2616216529. The next prime is 2616216553. The reversal of 2616216551 is 1556126162.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2616216551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2616216553) 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 3 ways as a sum of consecutive naturals, for example, 100623701 + ... + 100623726.

It is an arithmetic number, because the mean of its divisors is an integer number (704365998).

Almost surely, 2^2616216551 is an apocalyptic number.

2616216551 is a deficient number, since it is larger than the sum of its proper divisors (201247441).

2616216551 is a wasteful number, since it uses less digits than its factorization.

2616216551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201247440.

The product of its digits is 21600, while the sum is 35.

The square root of 2616216551 is about 51148.9643199156. The cubic root of 2616216551 is about 1377.9217740005.

The spelling of 2616216551 in words is "two billion, six hundred sixteen million, two hundred sixteen thousand, five hundred fifty-one".