2566428246650 has 24 divisors (see below), whose sum is σ = 5054353983900. Its totient is φ = 966184751360.

The previous prime is 2566428246643. The next prime is 2566428246659. The reversal of 2566428246650 is 566428246652.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 678269192041 + 1888159054609 = 823571^2 + 1374103^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2566428246659) 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 11 ways as a sum of consecutive naturals, for example, 1509662825 + ... + 1509664524.

Almost surely, 2^{2566428246650} is an apocalyptic number.

2566428246650 is a deficient number, since it is larger than the sum of its proper divisors (2487925737250).

2566428246650 is a wasteful number, since it uses less digits than its factorization.

2566428246650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019327378 (or 3019327373 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 56.

The spelling of 2566428246650 in words is "two trillion, five hundred sixty-six billion, four hundred twenty-eight million, two hundred forty-six thousand, six hundred fifty".