2563366820 has 48 divisors (see below), whose sum is σ = 6157226880. Its totient is φ = 878133504.

The previous prime is 2563366801. The next prime is 2563366823. The reversal of 2563366820 is 286633652.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2563366823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175976 + ... + 189984.

It is an arithmetic number, because the mean of its divisors is an integer number (128275560).

Almost surely, 2^2563366820 is an apocalyptic number.

2563366820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2563366820 is an abundant number, since it is smaller than the sum of its proper divisors (3593860060).

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

2563366820 is a wasteful number, since it uses less digits than its factorization.

2563366820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15332 (or 15330 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 2563366820 is about 50629.7029420478. The cubic root of 2563366820 is about 1368.5802010059.

The spelling of 2563366820 in words is "two billion, five hundred sixty-three million, three hundred sixty-six thousand, eight hundred twenty".