2616661984 has 48 divisors (see below), whose sum is σ = 5341003920. Its totient is φ = 1260989440.

The previous prime is 2616661979. The next prime is 2616662011. The reversal of 2616661984 is 4891666162.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 96882 + ... + 120910.

It is an arithmetic number, because the mean of its divisors is an integer number (111270915).

Almost surely, 2^2616661984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2616661984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2670501960).

2616661984 is an abundant number, since it is smaller than the sum of its proper divisors (2724341936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2616661984 is a wasteful number, since it uses less digits than its factorization.

2616661984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24163 (or 24155 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The square root of 2616661984 is about 51153.3184065316. The cubic root of 2616661984 is about 1377.9999705090. Note that the first 4 decimals are identical.

The spelling of 2616661984 in words is "two billion, six hundred sixteen million, six hundred sixty-one thousand, nine hundred eighty-four".