2642555616 has 192 divisors, whose sum is σ = 7641055296. Its totient is φ = 796262400.

The previous prime is 2642555581. The next prime is 2642555627. The reversal of 2642555616 is 6165552462.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4884306 + ... + 4884846.

It is an arithmetic number, because the mean of its divisors is an integer number (39797163).

Almost surely, 2^2642555616 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 2642555616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3820527648).

2642555616 is an abundant number, since it is smaller than the sum of its proper divisors (4998499680).

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

2642555616 is a wasteful number, since it uses less digits than its factorization.

2642555616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685 (or 677 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The square root of 2642555616 is about 51405.7936034451. The cubic root of 2642555616 is about 1382.5304715730.

The spelling of 2642555616 in words is "two billion, six hundred forty-two million, five hundred fifty-five thousand, six hundred sixteen".