2566954650 has 192 divisors, whose sum is σ = 7116794496. Its totient is φ = 608256000.

The previous prime is 2566954639. The next prime is 2566954651. The reversal of 2566954650 is 564596652.

It is a self number, because there is not a number n which added to its sum of digits gives 2566954650.

It is not an unprimeable number, because it can be changed into a prime (2566954651) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 7754985 + ... + 7755315.

It is an arithmetic number, because the mean of its divisors is an integer number (37066638).

Almost surely, 2^2566954650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2566954650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3558397248).

2566954650 is an abundant number, since it is smaller than the sum of its proper divisors (4549839846).

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

2566954650 is a wasteful number, since it uses less digits than its factorization.

2566954650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 48.

The square root of 2566954650 is about 50665.1226190167. The cubic root of 2566954650 is about 1369.2184168563.

The spelling of 2566954650 in words is "two billion, five hundred sixty-six million, nine hundred fifty-four thousand, six hundred fifty".